It is kind of shocking somebody actually got a patent for something that obvious. I thought one requirement for getting a patent is that the invention has to b

It is kind of shocking somebody actually got a patent for something that obvious. I thought one requirement for getting a patent is that the invention has to be non-obvious. Is this the result of cleverly wording the patent application, or did someone at the patent office neglect their job to actually review a patent application before accepting it?