What it’s doing is choosing based on the time of record creation. It’s a clock that just happens to only have only a seconds hand. And it can only count to three. Instead of the clock having numbers they are “Rock, Paper, scissors”.
A Public Form View:
this is a single entry form where the player chooses their move
A Public Block View:
this is a page designer block that always shows the most recent result of a match. It is expected that there is only one human player at a time.