  I briefly mention a previous claim of room temperature superconductivity (
arXiv:0905.3524) in Ag-based oxide material and compare their results with the
most recent claim of ambient temperature superconductivity in arXiv:1807.08572.
In both cases, an electrical transition to low resistance state and
diamagnetism are observed. Silver is a common ingredient in both claims. Does
it mean that silver holds the key to RT superconductivity or, the missing field
cool data (in both reports) hint of some other physical phenomenon than
superconductivity.
