Remember in elementary school you were told that in case of fire you have to line up quietly in a single file from smallest to tallest? What is the logic in that? What, do tall people burn slower?
Don’t forget to thank a teacher... for their part in creating an entire generation of uneducated, privileged, clueless wannabe social media celebrities with zero work ethic.
If you harvest ears of corn from a plant it's likely a corn plant, if you pick beans it's most likey from bean plant and if you harvest human organs it pretty much has to be from a human. There just isn't anywhere else to get them.