It's really very simple. Life is on the job training. The reason you can't teach an old dog new tricks is because, quite often, the dog has seen that trick before and isn't about to be fooled again. <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />

Old Dog

There is a very fine line between idiotic and clever. Most internet posters have no idea where it is.