[watwut]

Calculus is useless, until it is not at which moment it turns to incredible help. You don't need to go super deep, bit basics are occasionally quite useful. More importantly, if you learn only what you strictly need right now, your work possibilities will be very limited.

Also, for some reason, I found abstract algebra related to objet oriented design - similar kind of thinking.

This is free course - they won't be in unfortunate 3000$ lock you was. (I think calculus is useful, but I don't think it is worth paying that much money.)

[tjwii]

> Calculus is useless, until it is not at which moment it turns to incredible help.

Yes! And that's why you need to learn to be fluent in: Spanish, Chinese, Russian, French, and some other languages. You never know when you need them!

[watwut]

People seem to think that financial software, artificial i telligence, map software, math libraries they use, graphic software etc all emerged due to magic. They did not and all required calculus.