Wtf reCaptcha?

Is there a reason that the real words in captchas are entirely legible yet the random letters are 6/10 illegible... to me it would make more sense to obscure the real word and make the random ones easily legible. I get very agitated when I have to re-enter a captcha 3-4 times. I know it's called reCaptcha but c'mon guys.. I had no problem ignoring them if i got them wrong the first time back when I was using voting systems for private WOW or MC servers, But lately its meant money, and time is money. If there is a legitimate reason for this i'd like to know it. -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://groups.google.com/group/recaptcha. For more options, visit https://groups.google.com/groups/opt_out.