If a randomly applied rotational force is applied to screw threads, the probability of that force being applied in the direction that tightens the screw is equal to the probability of it being applied in the direction that loosens the thread. You might want to look up the definition of "random."
Using a similar theory playing roulette, I once bet on red thinking that it would eventually land back on red. So I doubled the bet each time knowing it would eventually hit and I would win and cover my losses. What I found is that it can hit on black ten times in a row. Perhaps it would work if I had more money at the time.
I felt just as if the camera had come loose from its strap, I was also randomly screwed.
Even if a game is 50/50, the expected value with = 0.5*value, but the expected value is only the likely value. With many roulette turns, the expected value might be even but the odds of remaining exactly even decreases toward zero as more turns as taken because the probability is spread over a greater number of possibilities. It is similar to the random walk phenomenon.