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Seinfeld currently has 2 routines, one is for the normie/mainstream crowd which is what you expect from his TV show. The other is his totally uncensored and cutting edge written material he only performs for younger audiences or in other words 'people not expecting TV Seinfeld' and it definitely would be blacklisted on any campus.

I was a freight forwarder/customs broker for a few years after highschool. They all hire remote though probably for terrible salary but it's still a salary, look at Flexjobs website I know Livingston hires remote brokers and forwarders, usually called 'specialist' or 'analyst' like this: https://jobs.livingstonintl.com/job/Client-Import-Analyst-FL... it says "Home Office Florida" but does that mean once a month going there for some meeting or just being US citizen, who knows apply and find out. You could also quit and just go around to established brokers and offer your services as a home contractor.

Here's another 'import specialist' type remote job https://workforcenow.adp.com/mascsr/default/mdf/recruitment/... notice the preference for bachelor degree, you should go back to school. However also notice 'equivalent business experience' so apply anyway. If you're wondering how I find these, a simple bot that scrapes "careers" pages into a sqlite dbms I query for select remote and various freight forwarding keywords. I made it when I needed a new developer job and turned out to be useless as some recruiter found me anyway.

However since this pandemic is ending surely there is some kind of student loans or business startup funds being floated around, if there are take them and go to school so you have a skill. If you can create a business think about your own job what the pain points are and how you can be a contractor. There was a woman running her own business when I worked there in highschool driving around the intl airport just collecting documents and standing in line at customs offices because some clearences required it. Brokers didn't want to do it so paid her, she in turned hired a bunch of other people to do the work, just managed everything with a cellphone and got paid.

You start by writing your own examples. Remove all the abstract notation and expand out everything, distribute everything back in so you just have a series to be summed or integrated. Stare at it for k = 0, 1, 2, etc., like 5 choose 4, 5 choose 3...maybe you can prove this yourself. This is actually how you learn, trying to do it yourself and thinking for a few hours/days/weeks about this problem why the identity is true, and then getting all those 'How to prove it' style books filled with established techniques to see if your identity can be proved by them.

Try Terence Tao's book Analysis I https://learnaifromscratch.github.io/math.html you pick up the gist of this kind of math doing basic proofs of natural numbers. You see and do enough of these that you will get the first proof here, where the n+1 comes from, and how you can distribute things in/out of any summation notation. The second integral proof from math stackexchange the same applies, remove all the abstract notation and just write down a few series, distribute in the 1/2pi(i). Do this for a few examples and you can probably figure it out yourself.

In the above link there is resources for olympiad and putnam problem solving on YouTube, if you watch some of those you'll see how they train competitors to solve something like this problem. List every tiny idea or strategy you have to prove that binomial identity and pick one that seems the easiest, start there. Fill the variables with corner cases what happens. If it's geometry what happens if you 'stretch and pull' the geometric interpretation by some constant factor. Look at Pascals Array since this is a binomial identity. This is what they do in those seminars if you're interested and it's free for anybody to watch.

When all those proof books throw 'implies' and other logic at you, read through this: https://ncatlab.org/nlab/files/MartinLofOnTheMeaning96.pdf