Put another way, any new, and even more complex theory can still possibly be true.

This is again comparing a simple theory to a more complex theory where both explain the data equally well.

Statistics is a very complex theory, and you can easily turn particular interests into "facts".

Who else would understand a thumbnail sketch of the world's most complex physical theory at o'clock in the morning?

Weiner's strength as a writer is his ability to flesh out these complex theories without losing the reader.

This model can be solved exactly and is used as a toy model for other more complex theories.

They have a talent for analyzing and formulating complex theories.

That is a very complex theory, from the realm of the conspiracy theory more generally.

He had the ability to translate complex economic theories into simple ideas that resonated with working people.

Its identity puzzled biologists for years, and they had a number of complex theories to explain it.