About 20 years ago, I was walking through a city centre with a friend, on the way to catch a train. A couple of Mormons tried to stop us, asking, "Have you ever thought about the purpose of life?"
Barely breaking stride, I shouted out, "Hot sweaty man sex!"
I don't consider that to be the purpose of life1, but remembering the look on their faces helps keep me grounded whenever I'm inclined to consider questions that cannot be answered.
That said, my resolution to the conflict between free will and determinism is to assume assume that 'truth' operates on a principle of equivalence. That's to say, if two models generate the equivalent outcomes, they are equivalently 'true'. The universe we observe could have deterministic rules that give rise to the same observable outcomes as one in which we have absolute free will, in which case the two models are equivalent. It would make no sense to endow one with a greater truth than the other.
That's a slightly difference definition of 'truth' than is commonly accepted, but it works for me.
A man like Ringo Elon got a great empty hole right through the middle of him. He can never kill enough or steal enough or inflict enough pain to ever fill it.
He didn't have the same experience. He was born with +20 charisma and wisdom, and intrinsic spellcasting. It's no more a real experience than Elon playing Diablo.
Former President Donald J Trump has more important things on his mind when he wakes up. Like saving the economy, securing the borders, and hoping his bladder holds out while playing his daily game of hunt the mushroom.
Whilst that's a possible explanation, correlation does not imply causation. There are many other potential contributing factors (increased loneliness, economic hardship, acceptability of suicide, changes to how deaths by misadventure vs suicide are recorded, etc) and more research will be needed to identify which, if any, played a role in the observed change.
Realcalc has an excellent RPN mode (enabled through Calculator Type in Settings). I've used it for the last six years or so (technically, in the premium version of the app).
Edit: Not open source - sorry, didn't see the community!
Yes! They both have the same Greek root, katharos, meaning purified.