[graycat]

Yup, sometimes something that goes bump in the night is dangerous and sometimes it is not. And sometimes we can guess that we heard something that went bump in the night but nothing did.

There are some bad things out there. We need to try to detect them. That sometimes we guess wrong doesn't mean we shouldn't try. But before we draw big conclusions and take important action, we need to be very careful -- measure at least twice and saw just once and because we may not get to saw twice.