[oldbbsnickname]

It's not a valid critique of lean or TPMS, it's the liability introduced with sole-source vendors. This a problem in every company that isn't vertically integrated and makes physical objects. "Irreplaceable supplier" must be made a non sequitur by deliberate incubation, partnering, incentivizing, and other strategies to ensure the health of suppliers providing critical inputs.

[travisporter]

It's not the TPMS it's the suspension

[lsaferite]

Based on the context, my guess is they meant to type TPS (or mistakenly added the M on purpose). It seems clear to me they are discussing the invalidity of criticizing 'lean' or 'TPMS( likely TPS)' as processes when the real issue is sole-source suppliers.