That's exactly the point and in response to the sibling comment as well - using StackOverFlow to find solutions to simple problems is the smart thing to do. Developers on SO compete for the best solutions. You're job as a developer is to curate and pick up new modern day conventions in doing so. The reason I don't waste time on reversing a palindrome is because frankly I'd rather spend time doing more important things for my products, and because its such a fundamental knowledge then how to reverse a palindrome is an answer that is available as fast as my brain could think about it. There are more important and more interesting problems to solve.
Needing stackoverflow to check for palindrome-ness would probably be a bigger problem though. Of course during your day-to-day you'll be allowed to google all sorts of things, but checking if something is a palindrome is so basic that all google could possibly provide you is the exact answer to the question.