I have a few closely related questions regarding interrogating and detaining, and their effect on how much money you can make.
Does salary depend on anything except the number of immigrants passing through your booth (ignoring the ones which incured penalties), and doesn't really care about whether or not they pass? Is the exact formula simply the number of immigrants times 5? (In particular, is it prudent to try and detain someone as opposed to just turning him back to save time and process more immigrants?)
Is there any point in interrogating immigrants in the first days, before you can detain them, or is it just a waste of time?
If not, is there any point interrogating them about things that won't get them detained, like an expired passport, as opposed to simply denying them (until the point when you have to stamp the reason for denial, at least)? Especially in cases of discrepancies between what they say and what their entry permit says. They always weasel out of it and there seems to be no point talking to them, at least as far as money is concerned.