Spreadsheet failures, any recent examples? [Software]

posted by Ohlbe – France, 2020-12-10 18:43 (36 d 11:48 ago) – Posting: # 22125
Views: 1,055

Dear ElMaestro,

» does anyone have recent examples of spreadsheet functions truly misbehaving with real-life realistic data?

A colleague recently pointed to a strange behaviour in Excel (I have 2013, he has 2016, both give the same result here.

Type =0.5-0.4-0.1: you'll get the expected result, 0.

Now type =(0.5-0.4-0.1): you'll get -2,77556E-17. What ? Ain't that supposed to be the same calculation ?

Trying =0=0.5-0.4-0.1: the answer I got was FALSE. WTF, if the answer you get is 0 ? It's not a matter of number of decimals displayed: I tried to add more to the first result, or to switch to scientific notation, but still got 0.

Regards
Ohlbe

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