Imagine this: one day, your youngest child wakes up complaining of aches and pains. Thinking it’s a fever, you check her temperature, and find nothing to be concerned about – in fact, she’s running a 99.0 Fahrenheit, or 0.4 degrees higher than the average temperature of 98.6, or well within reason. Thinking she’s just worried about a math test, you send her off.
Turns out, your kid’s body temperature normally runs at 96.0 – a perfectly healthy, and common, trait that hid the fact that she was actually running 4 degrees over normal, and wasn’t faking at all. Now, she’s gotten everyone else at school sick too.