A common delusion is to believe you are an important historical or political person, or that there is poison in your food.

Mr Monbiot has fallen victim to the common delusion that the age we live in is unusual, or even unique.

She wondered how she knew that, or if it was a common delusion.

A common delusion shared by some of our human citizens.

Economists and meteorologist may share a common delusion.

So they would be madmen, a curious trio sharing a common delusion.

Yes, that is by far the commonest delusion.

It's a common delusion that authors must have experienced everything they describe in their books.

Irrational suspicion of others (paranoia) is a common delusion.

The other common delusion about technology is that it will never be replaced.