Now, you see, you have obtained a very good and hopefully lasting memory, of this. If others mention 'non-linearity' your memory system will recall all this, and you can be emphasizing that, if you answer, with confidence. You understand the other person's question quite well,... maybe even making comment about the wrong assumption, led you astray a bit as well!
By the BTW, I'm 70 now, and often 'pleased' to learn some, simple, technicality that I'd never heard. So questions, and learning really should be at any age, any level of knowledge.
It's the ones that have finished learning, that are missing out, especially if complacent. (Those folks are in government, seemingly everywhere).
Thanks for good question !
Any EEVBLOG member can always message me, with question.