Tentalize

10.Bumps on keyboard While reading this look at your keyboard F and J Keys has small rectangular bumps on them the reasons is that many years ago when people started using the keyboard instead of typewriter they needed to teach other secretaries the optimum use of keyboard these bumps are used to type faster. 9.Disk inside Bottlecaps when you open up the cap of your bottle you will find a small disk in that.Most people don't notice this.Manufactures actually makes these disk separately.The use of this disk is to keep everything in a bottle especially the gas which keeps it carbonated. 8.Spike toothpaste cap many of you think that it is an unnecessary design but it has a very useful purpose.Toothpaste manufacturer actually puts ther=se  on caps in order to piss the foil to open the toothpaste. 7.Thick bits of cable A lot of laptop cables and chargers have thick bits on its cable.You have never thought of why?There is some magnetic iron oxi...