Here is something a friend posted over on MeWe, which I think is accurate as far as I can tell:

One of the marks of a liar is inconsistency. It's nigh impossible to keep lies coordinated so they all say the same thing.

Here's an example from recent history.

On March, 8 2020 — Dr. Anthony Fauci advised healthy Americans against wearing face masks.

In April 2020 — The CDC said Americans should be wearing face masks for the COVID.

In May 2020 — Dr. Anthony Fauci and the New England Journal of Medicine have admitted that masks are little more than symbols. Virtue signaling.

On January 25, 2021 — Dr. Fauci told healthy Americans to wear two masks instead of one.

And now, one week later…
On January 31, 2021 —This weekend Dr. Fauci backtracked on that insane idea of wearing multiple masks.

The easiest way to tell when Fauci is lying is to see if his mouth is moving.