Me: Listen to the seagulls.
Colleague: Yes, they are very excitable today.
Me: Imagine, before this building was here, centuries ago when the Vikings were here, even before that when there was no Dublin at all, the same seagulls were screeching around the sky on this very site.
Colleague: Well, hardly the same seagulls.
Me: OK, not exactly the same seagulls…