The TOWS check takes 10 seconds. Usually during push back. It would not slow down operations at all. Yes, the TOWS would not be required if pilots did their checklsts properly. I always thought if I really did the checklist nothing should be a problem. Just responding to the checklist is another matter that is easy to fall in to. We get bored and keep repeating the same checklists and sometimes just say the words. That is where the problem lies. Saying the response then looking at the actual position. Usually you realise the mistake but the checklist reader may assume what you said was true if he did not verify. Humans are prone to get complacent when doing the same thing over and over.