Earlier quoted context omitted.
> saw this coming from miles away. Computers are better at solving CAPTCHAs than people are good point... it's interesting how Captcha was initially popularized as a reverse Turing test, but it's just variants of Proof of Work today. And it seemed clever at the time for Google to leverage this for improvement of their OCR models (it was!), and makes you wonder what utility is derived from the proven "work" today.
With the crosswalk, bike, motorcycle, stairs type of things, wasn't that just improving their training data?
The OCR thing was earlier and used for Google Books, I think. Which is also is fitting for training data, or the motto "organize all knowledge".
At that time, this goal seemed really cool!