People are surely not machines, they have emotions! If you know the list of human emotions and can identify them by just looking at another person, than you can suddenly discover that most people just time after time show the same emotion all over again.

Do you have a father who all the time finds something bad about things? Like he is being antagonistic in life? Or maybe your mother worries all the time - everything makes her nervous. Or your friend who all the time finds something new and interesting and gets pretty enthusiastic.

Well, you may say that such a regular, time after time emotional tone can identify a person. In his book, "Science of Survival" L. Ron Hubbard, the founder of Scientology religion, shows a fascinating chart of human emotions and behavior, by which you can predict how a particular person would behave in different situations.

How well will he be able to communicate? Will he be able to agree with you or will always find something wrong to tell you. Will you be able to trust him or not. And many many more interesting personal traits. It is a very powerful knowledge to have, I'd tell you.

Anyway, after you identify the regular or chronic - that which shows itself all the time, emotional tone of a person - you can do the same about yourself. Please, do not ask anyone to do that for you, use your own judgement - it's safer that way.

And finally compare between your emotional tones. If they seem to be the same - wonderful! You are emotionally compatible. If not, meaning you feel differently from your partner more times than feeling the same, oh-oh! Watch out! It seems you are not that compatible - your emotional compatibility is not at its best.

You are welcome to try this out for any relationship you have - friends, loved one, co-workers, even parents - this can explain quite a lot about trouble you might have with some people.