There are many possibilities since you can pass any program&#x2F;algorithm through LJSON while still having a good level of safety. You could it, for example, to allow your users to pick an AI strategy for their bots in a game, among billion of other things. But there are many restrictions, so you can&#x27;t just write arbitrary JS functions. You have to design them much more carefully by requesting the proper primitives, using the technique I explained with the <i>hypothenuse</i> example. Of cours, you could just request `window` as a primitive and get everything, but yea...