[pflenker]

The best date picker is the one which doesn’t require picking a date. If done correctly, the browser can auto-fill your birthday, for example. In many other cases it’s possible and makes sense to guess a date and prefill the date field. Phones attempt the same with being biased towards entering the current date or datetime.

[carlosjobim]

> The best date picker is the one which doesn’t require picking a date

How are we going to guess which date you want to take the train or flight?

[pflenker]

Easy. You have data available which tells you about the most likely travel dates, and you set this as the default. Many booking platforms pick a weekend in 2 weeks or something like that. This predefined field changes the task from entering a date to correcting a date, where the prefilled date is likely close to the desired date and thus requires less input/changes than starting from scratch.