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Microsoft fixes the Excel feature that was wrecking scientific data
(www.theverge.com)
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This isn't a fix. Excel wasn't meant for this. While I do understand it's convenient as a database, unless you're doing something unimportant and small you just really should use something proper. And even now that this "problem" is gone, I am certain there are still more things that cause trouble. You can not satisfy everyone and Excel was just... not made for gene info storage.
Even if you don't want to use stuff that isn't Microsoft Office, that comes with Microsoft Access, which is a proper database management system. It's literally in the same software package, so why do people refuse to use it?
Why would you need a full blown (shitty) relational database management system to store gene info? Excel should be just fine for storing data in arbitrary tables. It shouldn't make assumptions about your data by default, and changing values that look like they're in a specific format should be opt-in, not default behavior.
But that's exactly what made the "auto" data type of Excel such a powerful tool when introduced. If you're storing text, make the datatype "text", problem solved.
Nowadays, when making stuff like Excel from scratch, you could opt for a "these look like dates, change the type from 'none' to 'date'?" but with middle management being conditioned on the data type being 'auto', that's something that's hard to change.
Honestly, I'd say you shouldn't do that prompt method. The auto type is genuinely great for the use cases which Excel is supposed to be used for, from someone managing their household finances to charting the growth of a business.
By all means, it absolutely should make assumptions about your data by default, as that's incredibly convenient for the average user. You can always change the type of a cell afterwards if what you're doing is special.