system
A chat on subreddit /r/wallstreetbets
human
Open a casino.  You have to remember that every time a casino offers a bet like this they have to have a large enough spread to make allowance for errors in judgment and the inability to balance the money on both sides quickly enough to guarantee a profit.  With the $1.4 million that guy bet, the casino was only risking $11,000.  If they offered 100-1 odds on the other side they needed to take in $11,000 in bets to break even.  But when the Jags win they make $1.4000.000 and lose $1.1 million.  So, they probably loved that big bet because it let them raise the odds on the other side to keep things in balance.  Even though computers do all the work it is really easy to make a gigantic error.  There is a great movie on this subject called Force Of Evil.  It's about the numbers racket, but the principal is the same.
gpt
Now consider that a dude who calls himself the greatest most genius businessman in the world had to declare bankruptcy at his casino