Conversion Solutions Holdings (fka CSHD)

[TeamPlayer]

An argument that is not valid is said to be “invalid”.

This is an example of a valid argument. The first is false, yet the conclusion is still valid.

Everyone who eats steak is a quarterback.
John eats steak.
Therefore, John is a quarterback.

This argument is valid but not sound. For an argument to be considered sound the argument must not only be valid, but the facts must be true as well.