Straying further off-topic... These days I'll happily turn a blind eye to a missing/extraneous apostrophe. It seems there are few people who can produce a full sentence, so it seems churlish to complain about the finer points of punctuation.
Or about the quality of the rivets in the hull. Er. The devil is in the details. It is the tiny oversights that cause the major catastrophes. Similarly, a misplaced apostrophe can convey a crucially different meaning. If the patient's tablets go missing, you better check the medicine cabinet. If the patients' tablets go missing, you have a much bigger problem on your hands...