I remember I had gone to IIT Kanpur for my interview in Masters. And in front of me was Professor HC Verma, who is literally the God of Physics!

I entered the room, and they offered me a chalk, to get to the board and solve a problem.

Some problems in life you are confused about, so you ask questions.
For others, you are simply clueless!
This one was in the latter category.

So I stare at the board for a couple minutes, say sorry, and walk out!

That’s it! The only one way left to get to IITs was closed now.

It turns out, for things that matter to you, it always helps to prepare the best of you.