Another reason to set a low DNS TTL, is if you are running a service with very limited resources and still want some kind of HA / Disaster recovery. For instance you setup your web app in both Digital Ocean and Linode, with a system that takes the database (for instance mysql replication) and the web app synchronized in the "replica" VM. When something bad happens and you can't recover, you switch DNS and that's it.

Wow. Didn't expect to see this banalities supported here on HN. If we believe something is simple, "Just" or "Simply" is fine. It's about the tone and what the person speaking really mean. If the sentence is told in a way that implies that the problem is trivial, and yet the other person is no capable of anything, then it's going to be offensive anyway, regardless of the wording. Leave this stuff to social justice warriors and JUST try to be nice with others.