Billions of people don't use calendar apps so they're useless; just remember your meetings.
replyBillions of people don't use todo list apps so they're useless; just remember what to do.
Billions of people don't use post-its apps so they're useless; just remember what you're going to write down.
Billions of people don't have cars; just walk.
You can dismiss any invention since industrial revolution with this logic.
Funnily enough at least in my personal anecdotic case it works about like that. I do just remember when my meetings will be (or look up where the meeting was decided on), do try to remember what I had planned (sometimes I forget, but almost always for the better), and written notes are rare enough that pen and paper are sufficient. And also don't have a driver license. I don't think my case is exactly rare, even among softdev croud.
replyThe point, as I noted below, is that this is an impractical solution.
replyYou can justify the value of any ridiculous invention by comparing it to a world-changing invention.
You have soundly defeated that strawman, well done.
replyAnd I am pretty sure every single one of those "billions of people" have had the experience of returning back from the grocery store, only to realize they were actually out of eggs.
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