I agree with this! I have learnt a lot of "yo mama" jokes after my time with cod online as well as a lot of colorful words from 10 years olds!

I agree. Smash has increased my speed at which....at which........I play Smash and see small things.

This only works if you're constantly experiencing or trying out new things though. If you're a camper, use the same strategies over and over again, are always winning and not pushing yourself against people better than you, or use the same weapon set up you're not developing your learning capacities.

I don't think many of these kinds of people exist as we all tend to at the very least pigeon hole ourselves into strategies that work or weapon set ups that work, then stay with that set up/strategy because it works!

Does it work if I only play the campaign?

Really? I learned how to curse & be a maniac on COD!