How do you estimate the weight of a person?
I know how much I weigh, but I don't know how much anyone else weighs. I guess some other people don't even weigh themselves so don't even know how much they weigh.
How do you estimate it?
I know how much I weigh, but I don't know how much anyone else weighs. I guess some other people don't even weigh themselves so don't even know how much they weigh.
How do you estimate it?
Practice. In theory if you're doing this a lot, you should be able do a decent job of estimating +/- 10%, which is more than accurate enough.
There are certainly other complications (some medications are dosed on "ideal body weight" (ignoring subcutaneous fat), etc...)
In fairness, we're usually estimating the weight of people of fairly fit builds, but with some practice estimating people of other builds, I agree that you'd get within 10%.
I don't think I've ever heard an adult male ever mention their own weight in public. You can see why it'd be hard to estimate when you don't have any data.