Important to keep in mind that decades old physics [biomechanics of running] infomation applies to supposedly new running shoe “technology”.
Hype and marketing -vs- reality.
As has always been the case…..racing flats are -the- best training shoes ever made.
Put data ahead of dogma. Follow the data -not- the crowd.
“In God we trust…Everyone else must bring data.”
[W.Edwards Deming]