We have a strange, slightly unhealthy love of guids here. The following is quite a normal geeky conversation in our department:

Well what you do is you look in md_attribute_template.
What was the guid, do you remember?
Was it B869B370 …?
E2BF …?

We have developed this (utterly false) notion of a guid 'mountain' and we talk of them being a scarce resource, like fossil fuels, that are being used up. We talk of buying guids from guid shops, some of which are better than others, and some that sell cheap guids and sometimes give you duplicates. Sometimes we accuse each other of wasting guids, imagining that they can never be used again once they have been generated.

In reality, of course, they are all entirely random, and there is an unfathomably large number of guids available, so the chances of generating the same one twice are unbelievably small!