I accidentally came across my idea of integrals, in the middle of the first course:

[0:15:06] Mike: I understood
[0:15:13] Mike: the essence of integrals
[0:15:18] Mike: So is it
Mike: We have some methods to solve integrals
[0:15:45] Mike: Let us have an integral
[0:15:50] Mike: pretty difficult
[0:16:41] Mike: but taking approximately 2-3 cm in length of the typical font
Mike: Then we take one of the methods
[0:17:21] Mike: we replace the steep twist with the differentiated integrate and do something else with the variables
[0:17:53] Mike: and we get a full shit in the form of a fraction on 3 rows of notebook with small fonts
Mike: If we get a fuck, we’re close to the goal
Now we have to find a way out of this shit.
[0:19:14] Mike: You need to reconcile something with something or integrate something else there
Mike: And then we’ll get another shit but no integral sign.
[0:19:32] Mike: Ah yes
[0:19:41] Mike: and the most important thing at the end to write +c