> Why do some stores have a captcha as part of their checkout process? I'm noticing that recently and I can't figure it out. And why doesn't Google optimize it

> Why do some stores have a captcha as part of their checkout process? I'm noticing that recently and I can't figure it out. And why doesn't Google optimize it to return "human" straight away when I am logged in with a 15 year old paying account who took a similar test earlier that day same day? Anyone who knows who are free to answer? Because otherwise I'll stick with my explanation which is one or more of: - organizational incompetence (surely someone should be able to code that up, only they don't call the shots and those who do aren't competent to see the issue) - greed (why do it when we can force people to do unpaid work for us?) - other possibly even worse reason