He presented us with a proposal for a new project.

I proposed a new project.

His opinion is completely irrelevant.

That proposal is completely out of the question.

This plan was perfectly successful.

This project has been completed in its entirety.

He is a perfectionist, and his approach to work is very strict.

This programming language is said to be Turing complete.

His performance was perfect and without blemish.

In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.