[mahdi7d1]

There is no reason to protect against bots using regular captchas (Seems like I'm weaker than your average bot in passing those). Brave search has a proof of work captcha and everytime I face it I'm glad it's not google's choose the bicycle one. Having a captcha be a hevy process ran for a couple of seconds might be a nuisance to me who needs to complete it once a day but to the person who has to do it a lot of time for scraping, the costs might add up rather quickly. And the foundamental mechanism of it makes its effectivenes irrelevant to how much progress AI has made.

Also maybe the recent rise in captcha difficulty is not companies making them harder to prevent bots but rather bots twisting the right answer. As I know it captcha works based on other users' answers so if a huge portion of these other users are bots they can fool the alghorithm into thinking their wrong answer is the right answer.