The Philosophy of Sets

In mathematical set theory the properties of the elements of a set are conferred on the set. This leads to so many problems…
Take, for instance, “the Peristaltic set” -

The Perstaltic set is the set of unforseen movements. That is why it is often miss-spelt.

If this is a joke, I like it.

So do I. (I assume the final misspelling is an extra layer of humour, but it’s too deep for me.)

I went out with Miss Spelling once. She was hot.

“The set of knives and forks” is said to weigh something because its elements weigh something.

So, on that basis -

“The set of unforseen movements” is said to display unforseen movements because its elements display unforseen movements.

I am about to have an unforeseen movement.

BL