2018.01.26 22:48:49 (957007443833380865) from Daniel J. Bernstein, replying to "Brian Smith (@BRIAN_____)" (954928016211156992):
Many alternatives were proposed (e.g., by Microsoft). The email records show tons of technical analysis of the options, explicitly downplaying Curve25519 deployment. If you think the technical criteria were misevaluated or badly weighted, please send technical comments to CFRG!