CAMELOT FANTASIES

That is definitely true.
Tone of voice & body language helps us to other people's wiles see through.
Reading eyes is harder though.
There are some people's eyeballs who through no fault of the person always wandering go.
Even if they have operations they don't always work forever.
Both eyes doing the same amount of work in these people doesn't seem to happen ever.
We sometimes turn a blind eye to things that we don't want to believe.
In that way we can be very easy to deceive.
Sometimes our mind blocks out things we don't want to know.
It just tells us that's a place it doesn't want to go.