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by wastedhours 3608 days ago
Couple of potential reasons: 1) progressive disclosure, getting people invested in filling out simple aspects of a form leads to increased conversions (i.e. giving an email address is easy, whereas creating an account is a different cognitive behavior, but a hypothesis is that it's easier to convert once the user is in the flow). 2) following Google. If there's ever a move to implement other authentication methods, then splitting it into that flow makes sense (if there's not, then it doesn't...)