Tabula rasa

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Roman tabula or wax tablet with stylus. Wachstafel.jpg
Roman tabula or wax tablet with stylus.

Tabula rasa ( /ˈtæbjələˈrɑːsə, -zə, ˈr-/ "blank slate") is the theory that individuals are born without built-in mental content and that therefore all knowledge comes from experience or perception. Epistemological proponents of tabula rasa disagree with the doctrine of innatism which holds that the mind is born already in possession of certain knowledge. Generally, proponents of the tabula rasa theory also favour the "nurture" side of the nature versus nurture debate when it comes to aspects of one's personality, social and emotional behaviour, knowledge and sapience.

Experience is the knowledge or mastery of an event or subject gained through involvement in or exposure to it. Terms in philosophy such as "empirical knowledge" or "a posteriori knowledge" are used to refer to knowledge based on experience. A person with considerable experience in a specific field can gain a reputation as an expert. The concept of experience generally refers to know-how or procedural knowledge, rather than propositional knowledge: on-the-job training rather than book-learning.

Perception Organization, identification, and interpretation of sensory information in order to represent and understand the environment

Perception is the organization, identification, and interpretation of sensory information in order to represent and understand the presented information, or the environment.

Epistemology A branch of philosophy concerned with the nature and scope of knowledge

Epistemology is the branch of philosophy concerned with the theory of knowledge.



Tabula rasa is a Latin phrase often translated as "clean slate" in English and originates from the Roman tabula used for notes, which was blanked by heating the wax and then smoothing it. [1] This roughly equates to the English term "blank slate" (or, more literally, "erased slate") which refers to the emptiness of a slate prior to it being written on with chalk. Both may be renewed repeatedly, by melting the wax of the tablet or by erasing the chalk on the slate.

English language West Germanic language

English is a West Germanic language that was first spoken in early medieval England and eventually became a global lingua franca. It is named after the Angles, one of the Germanic tribes that migrated to the area of Great Britain that later took their name, as England. Both names derive from Anglia, a peninsula in the Baltic Sea. The language is closely related to Frisian and Low Saxon, and its vocabulary has been significantly influenced by other Germanic languages, particularly Norse, and to a greater extent by Latin and French.

Roman Empire Period of Imperial Rome following the Roman Republic (27 BC–476 AD)

The Roman Empire was the post-Republican period of ancient Rome, consisting of large territorial holdings around the Mediterranean sea in Europe, North Africa and West Asia ruled by emperors. From the accession of Caesar Augustus to the military anarchy of the third century, it was a principate with Italy as metropole of the provinces and its city of Rome as sole capital. The Roman Empire was then ruled by multiple emperors and divided into a Western Roman Empire, based in Milan and later Ravenna, and an Eastern Roman Empire, based in Nicomedia and later Constantinople. Rome remained the nominal capital of both parts until 476 AD, when it sent the imperial insignia to Constantinople following the capture of Ravenna by the barbarians of Odoacer and the subsequent deposition of Romulus Augustus. The fall of the Western Roman Empire to Germanic kings, along with the hellenization of the Eastern Roman Empire into the Byzantine Empire, is conventionally used to mark the end of Ancient Rome and the beginning of the Middle Ages.

Slate (writing) thin piece of flat material used as a medium for writing

A slate is a thin piece of hard flat material, such as the rock also called slate, that is used as a medium for writing. The rock is "a metamorphic rock created by the recrystallization of the minerals in shale from clay to parallel-aligned, flat, flake-like minerals such as mica".


In Eastern philosophy, the concept of tabula rasa can be traced back to the writings of Aristotle who writes in his treatise "Περί Ψυχῆς" ( De Anima or On the Soul) of the "unscribed tablet." In one of the more well-known passages of this treatise he writes that:

Eastern philosophy

Eastern philosophy or Asian philosophy includes the various philosophies that originated in East and South Asia including Chinese philosophy, Japanese philosophy, and Korean philosophy which are dominant in East Asia and Vietnam, and Indian philosophy which are dominant in South Asia, Southeast Asia, Tibet and Mongolia.

Aristotle philosopher in ancient Greece

Aristotle was a Greek philosopher during the Classical period in Ancient Greece, the founder of the Lyceum and the Peripatetic school of philosophy and Aristotelian tradition. Along with his teacher Plato, he has been called the "Father of Western Philosophy". His writings cover many subjects – including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theatre, music, rhetoric, psychology, linguistics, economics, politics and government. Aristotle provided a complex synthesis of the various philosophies existing prior to him, and it was above all from his teachings that the West inherited its intellectual lexicon, as well as problems and methods of inquiry. As a result, his philosophy has exerted a unique influence on almost every form of knowledge in the West and it continues to be a subject of contemporary philosophical discussion.

Haven't we already disposed of the difficulty about interaction involving a common element, when we said that mind is in a sense potentially whatever is thinkable, though actually it is nothing until it has thought? What it thinks must be in it just as characters may be said to be on a writing-tablet on which as yet nothing stands written: this is exactly what happens with mind. [2]

This idea was further developed in Ancient Greek philosophy by the Stoic school. Stoic epistemology emphasizes that the mind starts blank, but acquires knowledge as the outside world is impressed upon it. [3] The doxographer Aetius summarizes this view as "When a man is born, the Stoics say, he has the commanding part of his soul like a sheet of paper ready for writing upon." [4] Diogenes Laërtius attributes a similar belief to the Stoic Zeno of Citium when he writes in Lives and Opinions of Eminent Philosophers that:

Stoicism School of Hellenistic Greek philosophy

Stoicism is a school of Hellenistic philosophy founded by Zeno of Citium in Athens in the early 3rd century BC. Stoicism is a philosophy of personal ethics informed by its system of logic and its views on the natural world. According to its teachings, as social beings, the path to eudaimonia (happiness) for humans is found in accepting the moment as it presents itself, by not allowing oneself to be controlled by the desire for pleasure or fear of pain, by using one's mind to understand the world and to do one's part in nature's plan, and by working together and treating others fairly and justly.

Aetius was a 1st- or 2nd-century AD doxographer and Eclectic philosopher.

Diogenes Laërtius late antique biographer of classical Greek philosophers

Diogenes Laërtius was a biographer of the Greek philosophers. Nothing is definitively known about his life, but his surviving Lives and Opinions of Eminent Philosophers is a principal source for the history of ancient Greek philosophy. His reputation is controversial among scholars because he often repeats information from his sources without critically evaluating it. He also frequently focuses on trivial or insignificant details of his subjects' lives while ignoring important details of their philosophical teachings and he sometimes fails to distinguish between earlier and later teachings of specific philosophical schools. However, unlike many other ancient secondary sources, Diogenes Laërtius generally reports philosophical teachings without attempting to reinterpret or expand on them, which means his accounts are often closer to the primary sources. Due to the loss of so many of the primary sources on which Diogenes relied, his work has become the foremost surviving source on the history of Greek philosophy.

Perception, again, is an impression produced on the mind, its name being appropriately borrowed from impressions on wax made by a seal; and perception they divide into, comprehensible and incomprehensible: Comprehensible, which they call the criterion of facts, and which is produced by a real object, and is, therefore, at the same time conformable to that object; Incomprehensible, which has no relation to any real object, or else, if it has any such relation, does not correspond to it, being but a vague and indistinct representation. [5]

In the eleventh century, the theory of tabula rasa was developed more clearly by the Persian philosopher Avicenna (Ibn Sina in Arabic). He argued that the "...human intellect at birth resembled a tabula rasa, a pure potentiality that is actualized through education and comes to know," and that knowledge is attained through "...empirical familiarity with objects in this world from which one abstracts universal concepts," which develops through a "...syllogistic method of reasoning; observations lead to propositional statements, which when compounded lead to further abstract concepts." He further argued that the intellect itself "...possesses levels of development from the static/material intellect (al-‘aql al-hayulani), that potentiality can acquire knowledge to the active intellect (al-‘aql al-fa‘il), the state of the human intellect at conjunction with the perfect source of knowledge." [6]

In the twelfth century, the Andalusian-Islamic philosopher and novelist, Ibn Tufail, known as "Abubacer" or "Ebn Tophail" in the West, demonstrated the theory of tabula rasa as a thought experiment through his Arabic philosophical novel, Hayy ibn Yaqzan , in which he depicted the development of the mind of a feral child "from a tabula rasa to that of an adult, in complete isolation from society" on a desert island, through experience alone. The Latin translation of his philosophical novel, entitled Philosophus Autodidactus, published by Edward Pococke the Younger in 1671, had an influence on John Locke's formulation of tabula rasa in An Essay Concerning Human Understanding . [7]

Female Figure (Sibyl with Tabula Rasa) by Diego Velazquez, c. 1648 Velazquez Sibyl Meadows Museum.jpg
Female Figure (Sibyl with Tabula Rasa) by Diego Velázquez, c. 1648

In the thirteenth century, St. Thomas Aquinas brought the Aristotelian and Avicennian notions to the forefront of Christian thought. [8] These notions sharply contrasted with the previously held Platonic notions of the human mind as an entity that preexisted somewhere in the heavens, before being sent down to join a body here on Earth (see Plato's Phaedo and Apology, as well as others). St. Bonaventure (also thirteenth century) was one of the fiercest intellectual opponents of Aquinas, offering some of the strongest arguments toward the Platonic idea of the mind.

The writings of Avicenna, Ibn Tufail, and Aquinas on the tabula rasa theory stood unprogressed and untested for several centuries.[ citation needed ] For example, the late medieval English jurist Sir John Fortescue, in his work In Praise of the Laws of England (Chapter VI), takes for granted the notion of tabula rasa, stressing it as the basis of the need for the education of the young in general, and of young princes specifically. "Therefore, Prince, whilst you are young and your mind is as it were a clean slate, impress on it these things, lest in future it be impressed more pleasurably with images of lesser worth." (His igitur, Princeps, dum Adolescens es, et Anima tua velutTabula rasa, depinge eam, ne in futurum ipsa Figuris minoris Frugi delectabilius depingatur.)

The modern idea of the theory, however, is attributed mostly to John Locke's expression of the idea in Essay Concerning Human Understanding (he uses the term "white paper" in Book II, Chap. I, 2). In Locke's philosophy, tabula rasa was the theory that at birth the (human) mind is a "blank slate" without rules for processing data, and that data is added and rules for processing are formed solely by one's sensory experiences. The notion is central to Lockean empiricism; it serves as the starting point for Locke's subsequent explication (in Book II) of simple ideas and complex ideas. As understood by Locke, tabula rasa meant that the mind of the individual was born blank, and it also emphasized the freedom of individuals to author their own soul. Individuals are free to define the content of their character—but basic identity as a member of the human species cannot be altered. This presumption of a free, self-authored mind combined with an immutable human nature leads to the Lockean doctrine of "natural" rights. Locke's idea of tabula rasa is frequently compared with Thomas Hobbes's viewpoint of human nature, in which humans are endowed with inherent mental content—particularly with selfishness.[ citation needed ]

Tabula rasa also features in Sigmund Freud's psychoanalysis. Freud depicted personality traits as being formed by family dynamics (see Oedipus complex). Freud's theories imply that humans lack free will, but also that genetic influences on human personality are minimal. In Freudian psychoanalysis, one is largely determined by one's upbringing.[ citation needed ]

The tabula rasa concept became popular in social sciences during the twentieth century. Early ideas of eugenics posited that human intelligence correlated strongly with social class, but these ideas were rejected, and the idea that genes (or simply "blood") determined a person's character became regarded as racist. By the 1970s, scientists such as John Money had come to see gender identity as socially constructed, rather than rooted in genetics.


Psychology and neurobiology

Psychologists and neurobiologists have shown evidence that initially, the entire cerebral cortex is programmed and organized to process sensory input, control motor actions, regulate emotion, and respond reflexively (under predetermined conditions). [9] These programmed mechanisms in the brain subsequently act to learn and refine the ability of the organism. [10] [11] For example, psychologist Steven Pinker showed that—in contrast to written language—the brain is "programmed" to pick up spoken language spontaneously. [12]

There have been claims by a minority in psychology and neurobiology, however, that the brain is tabula rasa only for certain behaviours. For instance, with respect to one's ability to acquire both general and special types of knowledge or skills, Michael Howe argued against the existence of innate talent. [13] There also have been neurological investigations into specific learning and memory functions, such as Karl Lashley's study on mass action and serial interaction mechanisms.

Important evidence against the tabula rasa model of the mind comes from behavioural genetics, especially twin and adoption studies (see below). These indicate strong genetic influences on personal characteristics such as IQ, alcoholism, gender identity, and other traits. [12] Critically, multivariate studies show that the distinct faculties of the mind, such as memory and reason, fractionate along genetic boundaries. Cultural universals such as emotion and the relative resilience of psychological adaptation to accidental biological changes (for instance the David Reimer case of gender reassignment following an accident) also support basic biological mechanisms in the mind. [14]

Social pre-wiring

Twin studies have resulted in important evidence against the tabula rasa model of the mind, specifically, of social behaviour.

The social pre-wiring hypothesis refers to the ontogeny of social interaction. Also informally referred to as, "wired to be social." The theory questions whether there is a propensity to socially oriented action already present before birth. Research in the theory concludes that newborns are born into the world with a unique genetic wiring to be social [15] .

Circumstantial evidence supporting the social pre-wiring hypothesis can be revealed when examining newborns' behaviour. Newborns, not even hours after birth, have been found to display a preparedness for social interaction. This preparedness is expressed in ways such as their imitation of facial gestures. This observed behaviour cannot be attributed to any current form of socialization or social construction. Rather, newborns most likely inherit to some extent social behaviour and identity through genetics [15] .

Principal evidence of this theory is uncovered by examining twin pregnancies. The main argument is, if there are social behaviours that are inherited and developed before birth, then one should expect twin fetuses to engage in some form of social interaction before they are born. Thus, ten fetuses were analyzed over a period of time using ultrasound techniques. Using kinematic analysis, the results of the experiment were that the twin fetuses would interact with each other for longer periods and more often as the pregnancies went on. Researchers were able to conclude that the performance of movements between the co-twins were not accidental but specifically aimed [15] .

The social pre-wiring hypothesis was proved correct, "The central advance of this study is the demonstration that 'social actions' are already performed in the second trimester of gestation. Starting from the 14th week of gestation twin fetuses plan and execute movements specifically aimed at the co-twin. These findings force us to predate the emergence of social behaviour: when the context enables it, as in the case of twin fetuses, other-directed actions are not only possible but predominant over self-directed actions." [15] .

Computer science

In computer science, tabula rasa refers to the development of autonomous agents with a mechanism to reason and plan toward their goal, but no "built-in" knowledge-base of their environment. Thus they truly are a blank slate.

In reality autonomous agents possess an initial data-set or knowledge-base, but this cannot be immutable or it would hamper autonomy and heuristic ability.[ citation needed ] Even if the data-set is empty, it usually may be argued that there is a built-in bias in the reasoning and planning mechanisms.[ citation needed ] Either intentionally or unintentionally placed there by the human designer, it thus negates the true spirit of tabula rasa. [16]

A synthetic (programming) language parser (LR(1), LALR(1) or SLR(1), for example) could be considered a special case of a tabula rasa, as it is designed to accept any of a possibly infinite set of source language programs, within a single programming language, and to output either a good parse of the program, or a good machine language translation of the program, either of which represents a success, or, alternately, a failure, and nothing else. The "initial data-set" is a set of tables which are generally produced mechanically by a parser table generator, usually from a BNF representation of the source language, and represents a "table representation" of that single programming language.

See also

Notes and references

  1. Smith, Sir William (1898). Cornish, F. Warre (ed.). A Concise Dictionary of Greek and Roman Antiquities. London: Spottiswoode and Co. pp. 608–9.
  2. Aristotle, De Anima, 429b29–430a1.
  3. Bardzell, Jeffrey (11 June 2014). Speculative Grammar and Stoic Language Theory in Medieval Allegorical Narrative: From Prudentius to Alan of Lille. Routledge. pp. 18–9.
  4. Diels-Kranz 4.11 translated by Long, A.A.; Sedley, D.N. (1987). The Hellenistic Philosophers: Vol. 1. Cambridge, Ma: Cambridge. p. 238.
  5. Diogenes Laërtius, vii. 43-46
  6. Sajjad H. Rizvi (2006), Avicenna/Ibn Sina (CA. 980–1037), Internet Encyclopedia of Philosophy
  7. G. A. Russell (1994), The Impact of the Philosophus autodidactus: Pocockes, John Locke and the Society of Friends, in: G. A. Russell (ed.), The 'Arabick' Interest of the Natural Philosophers in Seventeenth-Century England, pp. 224–262, Brill Publishers, ISBN   90-04-09459-8.
  8. See Orestes J. Gonzalez, Actus Essendi and the Habit of the First Principle in Thomas Aquinas (New York: Einsiedler Press, 2019) .
  9. Rakic P. (July 1988). "Specification of cerebral cortical areas". Science. 241 (4862): 170–6. Bibcode:1988Sci...241..170R. doi:10.1126/science.3291116. PMID   3291116.
  10. Kalisman N, Silberberg G, Markram H; Silberberg; Markram (January 2005). "The neocortical microcircuit as a tabula rasa". Proc. Natl. Acad. Sci. U.S.A. 102 (3): 880–5. Bibcode:2005PNAS..102..880K. doi:10.1073/pnas.0407088102. PMC   545526 . PMID   15630093.CS1 maint: Multiple names: authors list (link)
  11. Le Bé JV, Markram H; Markram (August 2006). "Spontaneous and evoked synaptic rewiring in the neonatal neocortex". Proc. Natl. Acad. Sci. U.S.A. 103 (35): 13214–9. Bibcode:2006PNAS..10313214L. doi:10.1073/pnas.0604691103. PMC   1559779 . PMID   16924105.
  12. 1 2 Pinker, Steven. The Blank Slate. New York: Penguin. 2002.
  13. M. J. Howe, J. W. Davidson and J. A. Sloboda. (1998). Innate talents: reality or myth? Behav. Brain. Sci. , 21, 399–407; discussion 407–42.
  14. Diamond, Milton (1 March 1997). "Sex Reassignment at Birth". Archives of Pediatrics & Adolescent Medicine. 151 (3): 298. doi:10.1001/archpedi.1997.02170400084015.
  15. 1 2 3 4 Umberto Castiello, et al: National Institutes of Health
  16. The Jargon Files: "Sussman attains enlightenment", also see the article section Hacker koan: Uncarved block


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