While thinking about various things, I ended up with a strange title. Suddenly, if you have two glasses of the same shape and one is just 0.3mm thinner, do you think you could discern the difference? Not 3mm, but just 0.3mm (about the thickness of a business card). Many people might not be confident in … Jatka artikkelin Do you have the ability to discern a 0.3mm difference? lukemista