The carrot is limp, not dead
We judge produce like a talent show. It comes out of the drawer, it gets held up to the light, and if it doesn't look confident it goes in the bin.
The trouble is that the visual verdict conflates two completely different situations. One of them is a quality change. The other is spoilage. They don't look the same, and only one of them is a reason to throw something away.
FDA's guidance encodes the distinction
Look at how FDA words it. When preparing fresh produce, cut away any damaged or bruised areas. And separately: throw away any produce that looks rotten.
Two different instructions, two different states. A bruise gets trimmed. Rot gets discarded. The guidance never says to discard something for being a bit sad.
A registered dietitian quoted by the Associated Press earlier this year put the same idea more memorably, noting that a little ugly is not the same as unsafe. Their point was that produce which has wilted, softened, or discolored slightly may not be at its best in a given dish, but that this is usually a quality issue rather than a safety one, and that the actual signals for discarding are distinct: visible mold, slime, leaking liquid, or a strong unpleasant odor.
Those four things are unambiguous. None of them is "the celery bends now."
Wilting is a water problem
Here's the mechanism, and it explains why limp produce is usually the least alarming thing in the drawer.
UC Davis's long-term storage table calls for relative humidity of 95 to 100 percent for most leafy vegetables, and 98 to 100 for lettuce and celery specifically. Your refrigerator does not remotely provide that. It's a dry box, which is a real problem for a lettuce leaf, because the leaf's crispness is water pressure inside its cells and nothing else.
So a limp green has lost water. It hasn't been colonized, it hasn't decomposed, it has dehydrated. That's a different event from spoilage in the same way that a thirsty person is not an ill one.
Which is why the revival trick works on greens that are merely floppy: a soak in cold water for a few minutes, then dry them properly. You're putting the water back. It won't resurrect anything that's actually gone, and it does an unreasonable amount for something that just looked hopeless.
The rest of the vocabulary of quality
Once you know the distinction, a lot of what we've written about starts reading as quality language rather than warning signs.
The chilled tomato that UC Davis describes as failing to ripen properly, developing blotchy color, and softening early: all quality. The cut lettuce that browns because wounding kicked off a chemical response: quality. Cilantro whose aroma drops off after ten days while it still looks sellable for three weeks: quality.
None of those are spoilage. They're descriptions of a thing that's less good than it was, which is the normal state of nearly everything in a kitchen and not a verdict.
Sturdy vegetables that have gone soft or lost their color generally cook better than they do raw, which is one sentence of cooking advice and all you're getting, because a soup is not a strategy and this isn't a recipe blog.
Nobody trained you to do this
The instinct to bin the ugly one isn't a personal failing. It's learned, and it was taught extremely thoroughly by an industry that sorts produce for appearance before you ever see it. Every carrot in the bag was selected to look like the others. When one stops looking like the others, it reads as broken rather than as a carrot with a few days on it.
The supermarket set an expectation of uniformity and then didn't mention that uniformity is a purchasing standard rather than a safety threshold.
The short version
Limp, soft, faded, bendy, slightly wrinkled: quality. Use it, probably cook it, don't agonize.
Mold, slime, weeping liquid, a smell that announces itself: discard it, and don't taste to check.
And where it's genuinely ambiguous, throw it out. That's the standard advice and it stays the standard advice, because nobody should be running experiments on themselves over a courgette.
This distinction is also what Savery's dates are actually about. A shelf life estimate is a projection of when something stops being good, not a declaration that it has become dangerous. The clock is a quality clock. Your eyes and nose are still the instrument for the other question, and they're better at it than any app.