Simple sinusoidal wave can't convey information?

AlephZero

A "simple sinusoidal periodic wave" in this sense continues for all time (both in the past and in the future) with the same amplitude and frequency.

That might be different from a "common sense" idea of what the word "simple" means.

AlephZero $Math 2012$ Recognitions: Science Advisor	A "simple sinusoidal periodic wave" in this sense continues for all time (both in the past and in the future) with the same amplitude and frequency. That might be different from a "common sense" idea of what the word "simple" means.