I might agree to suspend the public expression of my beliefs and even openly adopt the ludicrous ideas of others if it would end persecution against me. I don't actually have to change an iota of what I REALLY think, to do so. I would cease to do so, of course, at the earliest possible moment. Forgive me, but I do not put much stock into the concept of dead martrys.
In reality though, I do not know how long I could keep up such a charade as I am a teensy bit outspoken. I would have to treat the whole excercise as an acting role and determine little ways I could work against those who would have me turn my back on what I know.
The song by Pink Floyd called Animals expresses my thinking here rather well:
You gotta be crazy, you gotta have a real need.
You gotta sleep on your toes, and when you're on the street,
You gotta be able to pick out the easy meat with your eyes closed.
And then moving in silently, down wind and out of sight,
You gotta strike when the moment is right without thinking.
And after a while, you can work on points for style.
Like the club tie, and the firm handshake,
A certain look in the eye and an easy smile.
You have to be trusted by the people that you lie to,
So that when they turn their backs on you,
You'll get the chance to put the knife in.