A man coming back from parental leave doesn't sound like a protected class to me, unlike being a pregnant woman who is protected by the Pregnancy Discrimination Act in the United States.
Also, I'm not saying it's a surefire guarantee. The important part is you don't have to be the fastest runner when the wolf is hungry, you just have to run faster than the guy next to you.
It's more about the number range in ordinary use than the granularity.
Ordinary daily temperatures in F run from about 0-100. Numbers outside of this range are extreme weather.