I, like many others, struggle to answer this question. But generally I find the best way to answer this is by trial and error. Let me show you my technique…
To follow along at home you’ll need a knife and a tender surface. I always use my own thigh, that way if the object in question is indeed sharp, the point should impale my thigh. But you can use use someone else’s thigh if you’re unsure.
A knife is the most common sharp object, but I never know where the point is. Here’s how I find out, once you do it yourself you’ll see it’s very simple.
Firstly, grab your knife, it doesn’t matter what end. Grip it firmly and plunge it towards your thigh. If it goes through your flesh and deep into your thigh, then congratulations, you’ve found the point! If not, you probably tried to plunge the wrong end into your thigh. Don’t worry. Turn the knife around and try again!
You can use this technique to find the pointy end on other things too! Like forks, arrows, needles, pins, pencils, letter openers, teeth, scissors, nails… the list goes on.