Demarcation-Acceptance Synchronism (Fraser-Sarwar-2018)

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An attempt to answer the question of Synchronism vs. Asynchronism of Demarcation and Acceptance which states "Every theory that becomes accepted satisfies the demarcation criteria employed at the time of acceptance."

Demarcation-Acceptance Synchronism theorem (Fraser-Sarwar-2018).png

Demarcation-Acceptance Synchronism was formulated by Patrick Fraser and Ameer Sarwar in 2018.1


Acceptance Record

This theory has never been accepted.

Suggestions To Accept

Here are all the modifications where the acceptance of this theory has been suggested:
ModificationCommunityDate SuggestedSummaryVerdictVerdict RationaleDate Assessed
Sciento-2018-0020Scientonomy28 January 2018Accept the demarcation-acceptance synchronism theorem.OpenThe modification can only become accepted once modifications Sciento-2018-0014 and Sciento-2018-0019 all become accepted.

Question Answered

Demarcation-Acceptance Synchronism (Fraser-Sarwar-2018) is an attempt to answer the following question: Is it the case that acceptance of a theory necessarily implies that the theory also satisfied the demarcation criteria employed at the time of acceptance?

See Synchronism vs. Asynchronism of Demarcation and Acceptance for more details.


The law of theory demarcation states that a theory is deemed as scientific only if it satisfies the demarcation criteria employed by the epistemic community at the time. The definition of theory acceptance suggested by Fraser and Sarwar states that an accepted theory is a scientific theory that is taken to be the best available description or prescription of its object of study. It follows from these two premises that whenever a theory is accepted, it must also have satisfied the demarcation criteria of the time. After all, if it did not, then the definition of theory acceptance is contradicted. Therefore, if the definition of theory acceptance and the law of demarcation criteria are accepted, then it must also be accepted that accepted theories satisfy the criteria of demarcation. This demarcation-acceptance synchronism is presented somewhat more formally in the following diagram:

Demarcation-Acceptance Synchronism theorem deduction (Fraser-Sarwar-2018).png


  1. ^  Fraser, Patrick and Sarwar, Ameer. (2018) A Compatibility Law and the Classification of Theory Change. Scientonomy 2, 67-82. Retrieved from