He is supporting that theory.

I can't see an end to the argument with him.

We gathered to discuss that issue.

We use encryption to protect important data.

We need to encrypt important data.

I am interested in investing in cryptocurrency.

He is studying computer science at a specialized school.

There are many different specialty stores in this town.

He is a specialist fool, with no interest in anything outside his field.

He couldn't say anything about issues outside of his field of expertise.