It's fuzzy. I know exactly what a terraflop is including that most people use it to refer to 32 bit floating point operations by default but it can still mean

It's fuzzy. I know exactly what a terraflop is including that most people use it to refer to 32 bit floating point operations by default but it can still mean other widths if specified. I thought a parsec was somewhere between 2 and 20 light years which is correct but still imprecise. I know damask is a fabric associated with dresses I've run into in books but have no idea what it looks like. So do I know 1, 2, or 3 of those words? It's fuzzy.