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The Neurological analysis section was written by a nonnative speaker and contains spelling and grammar errors. Moreover, their interpretations of studies and use of scientific terms are suspect. This section would greatly benefit from review by someone with a familiarity with neuroscience. — Preceding unsigned comment added by 2601:401:101:2A40:7443:EBEB:3D20:16C3 ( talk) 00:39, 29 March 2020 (UTC) reply

It would be useful, if one can be found (or created), to add an animated example of a calculation with the abacus. Pol098 ( talk) 18:11, 4 August 2020 (UTC) reply

It might be useful to add an explained example of use for a simple calculation. Pol098 ( talk) 19:03, 4 August 2020 (UTC) reply

What kind of abacus would the first person to write the word down in 1387 England have recognized? Would it just have been a Roman or Greek abacus? How long did Europe (and post-Columbian America) use abacuses? I don't think I remember seeing them in movies from a hundred years ago; were they already gone before modern, inexpensive calculators? The only abacus in the article not associated with a specific culture is the one for schoolchildren, and as a child I remember being told those were simplified from the real thing. Similarly, I believe the abacus was for a long time very important to the Middle East, and according to the lede is still in use in Africa. If anyone has info (and sources) to fill some of these gaps, it'd help the article greatly! Also, quick side note while I'm here, the article on algorist has a different version of the picture at the head of the article, maybe one would be preferable to the other? — Preceding unsigned comment added by 72.81.227.125 ( talk) 16:23, 26 June 2022 (UTC) reply