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CUViper

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[ my public key: https://keybase.io/cuviper; my proof: https://keybase.io/cuviper/sigs/cvbDtsN5sZS8LXYsp5qx5SgsxrpkGzzKem_yMPLGvFc ]

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Even if a pointer was guaranteed correct at the time of creation, it can't be known safe to dereference in the future unless you put a lifetime on it, and then it's just a reference.

If pure red is at 0° hue, and orange at 30°, then that engineering value at 3° is much closer to red. The other two at 18° and 19° better fit the reddish-orange description, still more orange than red, while safety orange is up at 28°.

It can be applied more generally. If you're focusing on improving the performance of something that only takes 10% of your time, then the other 90% will still dominate.