I was entering a heart rate into the electronic PCR and I mistakenly typed “848.” The program has automatic error detection and the field turned red, as if angry with me or calling me stupid.
“Can you imagine a heart rate that fast?” I mumbled to myself as I corrected it. (Forgive me; it was the middle of the night.)
And then, out of curiosity, I wondered if the program had a range for allowable heart rates. I put my mouse pointer over the field.
“Heart rate can only be between 0 and 500.”
Five hundred? Can you imagine?
Supposedly, hummingbirds’ hearts can beat up to more than 1200 times a minute.