sorry for bumping an old topic.

To me, karma is not applicable individually, not all the time at least. However, when you analyse a large entity, you will see a pattern of action-consequences.

Simple example : why are there more flash floods? Caused by deforestation. Note that the person chopping down trees may not be affected at all while innocents drown. In this case, HUMANITY is a single entity; they acted and received the backlash, though not on individual levels.