Or it will ask for pictures of crosswalks, and you have to decide if 3 pixels of a crosswalk in the corner of one of the pictures counts.
The pictures are blurry and positioned at weird angles.
There are lots of signs with east-asian letters (I'm not informed enough to guess what kind of alphabet they belong to) and I have no idea wether they are store fronts or not.
Is a sign to a dentist's office a store front? Generally it seems like anything with a sign above some sort of door or window qualifies as a store front.
So yes, it’s arbitrary, but it’s supposed to be. It’s about your gut feeling as a human because that’s the whole reason they’re showing you any of these images.
If it “looks a lot like” a storefront then you’ve really got the same problem as everyone else in the comments: they’re small, blurry, images and it’s hard to tell what it is. That’s also the whole point: their algorithms can’t tell, so they want a general consensus from users. There are images they know and use as a control, but some percentage of the ones you see they’re legitimately not sure about.
I have definitely seen the "fire-hydrant" one, and we don't have fire hydrants (they are underground below well marked covers that are illegal to park on or placed where you can't park).
And coming from a first-world Western country, I have definitely been flummoxed by at least one that was too American for me to decipher. I feel sorry for anyone that doesn't watch American media.
I sometimes wonder if these projects are actually internal astroturfing, someone trying to make people hate Google from the inside, it's so bad it must be intentional right?