Imogen: Did you know that some buildings have icicles that form on them?
Me: Yes, that's interesting, isn't it? (I am anticipating that Imogen will talk about deficits of insulation at this point, because she is fascinated with causal links.)
Imogen: Yes, and if an icicle falls down when you are walking past it could land on your head and pierce your brain and that would cause a lot of bleeding and a very big mess.
Me: Yes, I suppose it could.
Imogen: So I think everyone who has an icicle on their building should put a pylon directly under the icicle so people will know not to walk there and then no one will get hurt.
Your safety lesson for the day, folks!