[jonfw]

To give the other side of the coin here- you at least need to know the basic logic behind it if you're going to be able to recognize when reading up on it might be needed.

If you have never considered the benefits of caching certain computational results in a recursive algorithm, than you probably wouldn't be as quick to recognize when that technique would be useful.

[baobabKoodaa]

Exactly. And also, even if you somehow recognized that "you need to use a DP solution here", it's not as easy as "read up on it" (like GP says). DP is not a trick that you can just learn once and then apply everywhere. It's not a npm package that you can install that solves your problem for you.