That's why a level crossing has a barrier that's only there when a train is approaching. Imagine the barrier was always there; that would be asking for people to ignore it.
I thought the contraceptive doesn't prevent the pregnancy but just causes the body to menstruate regardless. So she might have been pregnant many times but this time it wasn't terminated by mensuration? (I'm certainly not very confident in my understanding.)
Lighting doesn't work for large transactions, and isn't trustless for very small transactions. And lightning relies and being able to close channels so lighting security breaks when Bitcoin is congested.
If you care about these people then presumably it does make you happier in the long term to let them know that you care about them. Especially if it's not that pleasant in the moment I imagine having a system to remind you could be helpful.
72 = 2*2*2*3*3 so if the divisor is a multiple of those factors, the result is too. This makes the division quite easy in many cases. It's also why I immediately realized your typo in 72/4=19.
There is no difference between the customer paying extra and the seller paying extra. There is an amount the customer pays and an amount the seller receives, and the difference is what is paid extra.
Thanks for your answer. I agree making it difficult to unsubscribe is bad, but I honestly cannot imagine myself paying extra recurringly for saving myself 10 minutes once at the end. So it's interesting to see people making different trade-offs.
Then I don't think I understood your question. I agree the Copenhagen interpretation doesn't make sense, mostly because I listen to Sean Carroll's podcast.
The assumption is that if you wouldn't be reading, you could do something else that you would want to do. But if you are reading you can't. If you have more time than you know what to do with, then the argument doesn't hold.