Talk:3149: Measure Twice, Cut Once

FIRST!!!11 2001:67C:89C:702:1CE:1CE:BABE:3 00:38, 2 October 2025 (UTC) a

TH1RD! RadiantRainwing (talk) 00:57, 2 October 2025 (UTC)

F1FT3EN7H!! Logalex8369 (talk) 16:09, 2 October 2025 (UTC)

Measure once, shame on you. Cut twice, shame on me! StapleFreeBatteries (talk) 00:57, 2 October 2025 (UTC)

You know, that's not a bad proverb! RadiantRainwing (talk) 00:58, 2 October 2025 (UTC)

I will cut you! Shame on me. 82.13.184.33 08:49, 2 October 2025 (UTC)

This is my first XKCD explained! 108.254.160.57 00:59, 2 October 2025 (UTC)

Hip hip hooray for you! You did a great job. RadiantRainwing (talk) 01:02, 2 October 2025 (UTC)

OK - but how many times did you check it before saving? 82.13.184.33 08:49, 2 October 2025 (UTC)

A fundamental problem with this comic is that a "good carpenter" really means "an efficient carpenter" (true of any craftsman, really). Economy of motion, skilled enough to know when to be really precise and to know when precision doesn't matter and is a waste of time. The efficient carpenter doesn't need to measure twice, he or she gets it right on the first try. Or, consistent with the above, knows their capabilities well enough so they can only measure twice when it's truly necessary. And, of course, some of the best efficiencies come from not "measuring" at all — using an end stop or a jig so the cut is easy and repeatable without measurement. Drawing a line (or cutting without a line) against the actual reference point rather than against an intermediate measurement tool (some might call this "scribing," but that suggests a level of precision that isn't what I mean). Effectively, "measure zero times, cut once." And in the opposite, sometimes the most efficient approach is not to measure at all (whether numerically or against a reference object), but to make a rough cut and then a finish cut — effectively, "measure zero times, cut twice." Also possible is if you are gang cutting a stack of N boards, you measure 0 times or once and then make 1 cut, so on a per-board basis it's measure once, cut 1/N. I don't know that all of these things are obvious, per se, but I can't help feel surprised that they don't seem to have been considered. JohnHawkinson (talk) 06:38, 2 October 2025 (UTC)

That seems to be more of an issue with the proverb, rather than the comic. 82.13.184.33 08:49, 2 October 2025 (UTC)

Are you saying my wall with studs just butt ended atop one another isn't good enough? Oh, fine then, I'll go add some bracing and maybe nails. SDSpivey (talk) 11:07, 2 October 2025 (UTC)

PLEASE STOP, YOU'RE KILLING ME!!!! --DollarStoreBa'al^converse 13:08, 2 October 2025 (UTC)

Somewhat disappointed there's no joke about quantum mechanics, even in the title text. I guess figuring out how to fit the uncertainty principle here is left as exercise to the reader? 164.90.218.225 10:44, 2 October 2025 (UTC)

The title text seems to reference the Taoist concept of the uncarved block - https://en.wikipedia.org/wiki/Pu_(Taoism) 70.124.160.162 (talk) 13:18, 2 October 2025 (please sign your comments with ~~~~)

Possible reference to the real-life use of the reverse proverb (measure once cut twice) which is used by many makers. I am familiar with the concept from Adam Savage, but I don’t know if he’s the originator. The idea is that measurement is actually too imprecise of a tool and should only be used as an approximation. The final size of a piece will be based on something like a pressure fit. 98.36.13.95 (talk) 14:24, 2 October 2025 (please sign your comments with ~~~~)

About the title text, would the carpenter have to look or otherwise measure the wood to assume it's fine? Measure once, cut 0 times. -- L0L0Z1993 (talk) 15:19, 2 October 2025 (please sign your comments with ~~~~)

two measures one cut