[shubhamjain]

Although, I agree that trying a lot before putting up your problem is an important aspect of a good developer, sometimes, after building up something, an experienced developer might suggest you a solution that makes you wonder if you should have asked for it before.

Like, a game developer, might be able to suggest "Object Pooling", "Dirty Bit" to optimize the game's performance, that a novice might not have much idea about.

[geoelectric]

IME, you're only really going to immediately get why it's a good idea if you've tried or built the less optimal way first. Otherwise they have to explain the bad way too in order to make their point.

Plus, honestly, you shouldn't be taking their advice as a given. Best practices are always contextual. They're -probably- going to be right, but knowing enough to be critical (even if just quietly, to yourself) is a huge plus.