How does Google know that this exact tiny restaurant on the 4th floor of a building full of other restaurants and cafes is “usually busy at 8pm on Wednesday”?
In: 70
In a nutshell: Your phone sends location data to google, which allows google to track the information. Thanks to these informations, they know how busy it is (or how busy it will be)
Sidenote: This also applies to google maps navigation, lots of data allows to predict traffic even in the future (and quite accurate too)
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