the official description says:
"Each rank of Mental Lore, Telepathy will boost the TD pushdown from the song."
Krakiipedia says:
"Mental Lore, Telepathy: -1 additional TD at the following ranks: 1, 2, 3, 5, 8, 10, 14, 17, 21, 26, 31, 36, 42, 49, 55, 63, 70, 78, 87, 96 (total -20 TD)."
I assume the krakiipedia thresholds came from somewhere, but there's no reference.
Which one is true?
