There are often times when you have a clock that isn't working anymore. Whenever such a thing happens you want to fix the clock as soon as possible. This is because everyone looks at a clock and they have their attention towards it at different times of the day. Thus, having a clock that isn't working correctly may put everyone off place.
This is why you need to check a clock that isn't working and you need to repair or replace it as soon as possible. These guys had a clock at work and it wasn't working. At this point they realized that they needed to replace it, and the idea that one of them came with was implemented. This is the idea they had come up with and we cannot explain what was going through their mind here.