<human>: Can you give me the gist of the text in a nutshell?

I've been on reddit plenty long enough to know "there's a fuzzing system in place to fool spammers" and "there are caps on how much karma a post can receive."

Does anyone know *specifically* what the formula is?

Things that baffle me:

* Reddit has millions of users, likewise millions of hits per day. The top posts only garner about 2-3K karma.
* There are tens of thousands of people downvoting Neil Tyson's and Gillian Jacobs' AMAs. Only a small margin more than that are upvoting.
* There is obviously a "decay" factor; I'll see a post have 2800 karma, and a few hours later it has 1800. Or did the hivemind just have a reversal?
* The top posts of all time from several years ago have close to 20,000 upvotes. Reddit has grown exponentially since then and yet we never see anything that high anymore.
<bot>: Does anyone know the exact formula for calculating a post's karma if I gave you all of the parameters such as time since posting, upvotes, downvotes, views, etc.