Toss a half-burned stick in the pigpen and watch them chomp on it. Amazing; books of animal husbandry written before 1940 take it for granted that everyone knows to feed pigs charcoal. System cleanser and GI tract detox, and maybe other unidentified benefits.
Assuming that we understand natural systems and can therefore develop artificial replacements is like a two-year-old who watches Mama take notes during a phone conversation. When she leaves the room, he lifts the receiver, babbles into the mouthpiece, and smears marker over his mother’s careful script. No telling how important the information was, but it’s gone now. Hopefully nature’s redundancy will give us a follow-up call.