Newton's apple

I wish I had his cleverness! I arrived home late this evening to find that the electrician had fitted my new outdoor light. The light works perfectly but I noticed that the fridge and freezer weren't working, After much angst, going to the 24 hr supermarket for new fuses, a lot of dubious language and plenty of faffing around I found that he had plugged the wrong lead back into the socket and I had completely failed to notice! Problem solved but feeling really, really stupid.....