How can you prove how permanent are permanent markers?

Answer:
If you look at the scientific name for them (permanent markers) you'll notice that, by name, they're permanent; thus making them permanent. The fact that they are permanent is best shown by the fact that they are called "Permanent Markers."
First answer by ThicRic. Last edit by ThicRic. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 2 [recommend question].