The other benefit of talking to an outsider is you very frequently benefit from rubber duck debugging[1]
For me, the epiphany usually hits when I finally break down and decide to ask for help. I realize my cognitive blind spot while composing a message for a forum post or email.
It's always good to step back and acquire a fresh perspective.
Ah! The ancient feud between the School of the Duck and the Monastery of the Bear! I think modern times have calmed down the waters and all's right in the world of Engineer Fu.