2.2.3 queries about pops and stability

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magnate

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Hi all,

A couple of questions after 30-odd hours of 2.2.3:

1. When I first start expanding (my 2nd and 3rd planets), the emigration from my homeworld exactly equals the sum of immigration to the new colonies. Later on in the game it doesn't, some emigrants are leaking, not arriving at new colonies. I had assumed that this was because of emigration to filthy xeno worlds (I'm a fanatic xenophobe), but yesterday I noticed it happen before I had met any alien menace of any sort, so there were no known worlds to emigrate to outside my empire. So what causes this loss? Is it happiness or stability or whatever? Housing? Amenities?

2. Can someone spell out the maths of how housing, amenities and other factors affect happiness? (I know that +1 happiness equals +0.6 stability above 50, 1:1 below 50, and I know that +1 stability >50 equals +0.6% production and trade). In particular, the wiki mentions a factor called "Deviancy", which I can't find anywhere - is this a measure of how well the pops on the planet align with the government's ethics? If so how is this measured? If not, what is it?

Thanks. I'm loving 2.2.3, I've finally learned to love the new planets more than the old tiles. (I wasn't here when the old FTL systems were replaced by hyperlanes, which I'm quite pleased about.)