Venerable Ru Jun relates a story on the danger of making one’s own conclusion on how Karma works.
In the story, the main character equates his slaughtering of livestock as the cause of the good karma of him going to heaven. This is because the two events happened sequentially.
My learning is not to make our own assumptions on how Karma works by connecting too superficially cause and effect events.
Such flawed thinking can lead to questionable judgement.
We should rely on Buddha’s Teachings to guide us instead.