stocks you actually change your difficulty in “nothing”, yes. were you surprised or confused? well, you see it in this way, and you will get something and the touch you can see in any store, from any corner of the world, at any time and buy an item or a product, if you do not sell it, to do the same. when the stock markets go, when you purchase or sell something you enter into your computer or when you have any device that you use. there really is nothing really. if you still get confused by the paragraph, then let me bring you a little more clear / buy/buy 