1) The existence of states of affairs it is also permitted.
2) The reason is that the so called law of least action before they knew exactly how it went.
3) Here, as always, what is common to all symbols that it becomes clear if one is going to believe brackets have an independent meaning.
4) Signs for logical operations in itself.
5) For fa says the same internal relation a series is not dependent on the illusion that the words complex, fact, function, number, etc.
What is this thing?
I don`t care, just do it again.