One of the things that caught my attention was the Cold Bore Test, I had no idea.
But what is impressive is that you can see the trace of the casualty... I said woww, really?
I've always been curious about snipers and how they adjust the sights to make everything extremely accurate.
Saving distances, what I have tried are to give you two examples, paints for paintings, which I had to try first because it was a brand that I didn't know before selling it to my students.
And then working in the fruit shop, my boss made me try the products, some of them, because they were new and he told me I had to try them in order to recommend them to the customers. Then he would ask me how that product was.
And I didn't sleep!