Hi @skypal. To be honest, when I first read your headline, I was expecting (due to my personal past experiences) an account from a former Hogwarts professor. ;)

"The memory of a magic effect is as important as the initial reaction. When someone describes a magic effect they just saw, they always exaggerate, forget certain parts, and make up details without even knowing it. It's well known eyewitness testimony is unreliable. "But my memory is accurate," says the fool."

This reminds me of the teaching story about the three blind men in a room with an elephant...each exclaiming what it was, and each being wrong.

An aggregate of eyewitness testimony will yield an accurate result ---- "netwrorked eyewitness testimony". Collectively it will have built in error correction. :)

---Homa

P.S. Upvoted and resteemed and followed. Thanks for the enlightening post! :)