I agree with the basic premise ... even when you pick one area (e.g. web dev), it's impossible to learn or even try "everything" (how can you even define 'everything').
It can be good to know "what's happening" in a field, but don't even try to do a "hello world" in ALL of the front end frameworks (to mention just one topic) which are published - only do that when you have too much time to waste.
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I agree with the basic premise ... even when you pick one area (e.g. web dev), it's impossible to learn or even try "everything" (how can you even define 'everything').
It can be good to know "what's happening" in a field, but don't even try to do a "hello world" in ALL of the front end frameworks (to mention just one topic) which are published - only do that when you have too much time to waste.