When it comes to happiness, it is really interesting the choices people make. Thought experiment: in an ideal world, what is the preference that leads to 100/0

When it comes to happiness, it is really interesting the choices people make. Thought experiment: in an ideal world, what is the preference that leads to 100/0 split in career choice? By that I mean in an ideal world, by how much does someone have to prefer career A over career B before there is a 100% chance people choose A? At an 80-20 preference for A, surely 100% of people choose A - why would you choose B when you overwhelmingly prefer A? But what about 60-40? Of even 51-49? Unlike say eating lunch, where you have 300 odd per year, which means you can have Thai 200 times, Italian 100 and other things the rest, given how costly most careers are to establish - University is time AND money, and progressing the career ladder is time - I think a rather small preference, closer to 51-49 than than 60-40, is going to lead, in an ideal world, to 100-0 A over B. Because why would anyone choose a lesser preference? In an unideal world, where the cost of in income over a lifetime is large, job prospects limited and risks of failing large, preference will be negated, muted or reversed. In an ideal world, that tiny preference is going to really matter. TL;DR Happiness is as much a measure of what you can reasonably choose from as what you actually choose.