[miguelgrinberg]

Explain to me how you would apply this concept to a book. Or to a YouTube video.

I'm not unreasonable, I get that things have to change from time to time. I just think maintainers should think more carefully when they introduce breaking changes. The cost to them is very high!

[dekhn]

I agree entirely that maintainers should be more careful with breaking changes. Few things annoy me more than getting 99% of thew way into a project and then getting an error simply because somebody moved a function from one place to the other.

This is really just another instance of CADT, imho.

I can't help with books- and IMHO, this is why books are obsolete for internet technology. I used to be a big OReilly fan, but at some point, the books were worse than useless because none of the examples would work 10 years later. Now, examples don't work 1 year later!

[bluedino]

Books are like the ultimate "container". They are so tied to certain versions. I liked the books that came with CD's that included everything, even if they were almost immediately obsolete.