I have been absent from the group for a long time, but this sudden visit of mine brings with it, I hope, something worthwhile.
I have uploaded a paper (optionality_of_karma.pdf). It is very short, with just over 1400 words. But in that short paper, I have answered the well-known Trolley Car Dilemma, which was posed by Michael Sandel at the beginning of his lectures on justice, from the Buddhist perspective. Besides, I have been able to answer another riddle---why Buddhism almost always expresses moral precepts in negative terms.
In short, I hope it may make an interesting read. All feedbacks are welcome.