It is simply impossible to make a genuine straight, right-angle cut on paper using a scissors, or even a razor blade and straight edge. The old guillotine paper cutter could deliver a clean cut, but at the risk of taking your fingers away. Fiskars, the scissors makers, invented a tiny blade mounted on a hinged holder that zips through material without any possible harm, even to the youngest children. It’s fast, accurate, and crisp.
A cool tool is anything useful that is superior to comparable items. If you think this tool is inferior suggest a better one. You are welcome to insult a tool, but comments containing insults to individual people will be deleted. Corrections of fact are always welcomed, if stated politely. Recommendations of better tools are dearly wanted and may be elevated to the front page.