Let's have a lesson on karma today. What is karma? According to the Wikipedia, karma is...

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The philosophical explanation of karma can differ slightly between traditions, but the general concept is basically the same. Through the law of karma, the effects of all deeds actively create past, present, and future experiences, thus making one responsible for one's own life, and the pain and joy it brings to him/her and others. The results or 'fruits' of actions are called karma-phala. In religions that incorporate reincarnation, karma extends through one's present life and all past and future lives as well.

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But that's just religion. To me, karma is the returns, the accrual of all the actions you did in this world, be it bad or good. And then, something happens in tune to the nature of those deeds. In short, it deals with deeds. (for everything else there's Mastercard?)

So, be afraid...be very, very afraid. What you did now, you will have to suffer(or enjoy) in your later years. For example, you might call people banana for one sem, then you hurt you leg. Being pessimistic and arrogant breaks your bone. C4-ing someone...well, for that, we'll have to see.

Till we meet again.