Earlier quoted context omitted.
Google doesn't even show a catpcha if they have enough tracking info for toy to verify you're a human, which is pretty simple for them if you don't clear all your cookies for a few days. I'm pretty sure Google thinks if they have to show you a catpcha they've failed, but along with that they don't feel the need to make the catpchas particularly easy if they do have to show it.
Except when it doesn't. Every so often it suddenly spams one with sheer number of captcha on sites that use the Google's Recaptcha API. Then you have to solve detect the houses, cars, store-fronts, deceiver plates and street signs several times successfully to move on or be prepared to solve several more captches to be allowed to move on. I would wish Google fix Recaptcha. It used to be so good.
If you are, Google will spam you to death with captchas; it kinda makes sense because captchas are getting easier to solve for machines, so apparently the new test of humanity is whether Google can track your activity on other sites.