Almost to the finish line

I've been writing constantly for this biology textbook freelance gig for the last week, plus doing my regular teaching and motherhood thing. I think I've bitten off a little more than I can chew. We're talking shoving a whole freakin 1 lb hamburger in my mouth. Metaphorically speaking. I'm so ready for spring break! We're headed to New Orleans!

Google reads my mind

The spell check often fails me, but I can type in about anything and google will say "did you mean..." and gently prompt me to the correct links. How do they do it?