7. Using this can be pretty dangerous. What if a person is very fair and honest about everything with the intend to screw you over big time later? And on the ot

7. Using this can be pretty dangerous. What if a person is very fair and honest about everything with the intend to screw you over big time later? And on the other hand if a person does some silly cheating in a friendly game and get caught right away, how dangerous can they really be for big stuff? There will probably be a lot if signs before that happens. Most of the advice can be easily spun around to "prove" the exact opposite.