Karma...

[experiencedguy]

The actual word 'Karma' means doing. Therefore, when people say 'It's karma', it means it's your doing.

I believe in it, but not as some form of celestial force. If you do something, it has an effect, and that effect can be either positive or negative, and there are knock on effects that you can understand, but it would be too time consuming to follow through (like chaos theory).

So, to me, Karma is the human (or moral) name for causality, namely cause and effect, which is the only truism of the universe.