We can tie knots in three dimensions because one-dimensional ropes “catch on each other”. This is why a long rope wound around itself, if done right, won’t come apart. We trust knots with our lives ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Andrea Barnes Andrea Barnes is a writer covering large cleaning appliances.

Some people won't mind if you keep your screen visible, but that doesn't mean you should let yourself be distracted. Jason Chun is a CNET writer covering a range of topics in tech, home, wellness, ...