So I got halfway through reading the XKCD cartoon but got distracted by the infinite grid problem, caught myself, and managed to finish reading the cartoon bef

So I got halfway through reading the XKCD cartoon but got distracted by the infinite grid problem, caught myself, and managed to finish reading the cartoon before going off to google the solution to the infinite grid problem. It was some time later before I cam back and realised I hadn't actually read the blog post. Oh the irony!