That evidence does not have to meet any kind of scientific test: pretty much any pattern of ink on paper will do the job.

CNN: Herbal remedies need real scrutiny

That's because the lines in the notebook are printed using a unique dot pattern that helps Evernote identify the paper's exact dimensions and hue, so it can optimize contrast and correct skew.

WSJ: The Cloud, Writ Large

The paper's authors note that the reduced activity is a "pattern reminiscent of that seen in patients with autism, " who are often disengaged from others and who, like hoarders, have rigid routines as well as obsessive behavior.

CNN: STORY HIGHLIGHTS

"My opinion is that the imprint pattern on the back of the envelope and also on the piece of paper could have been caused by the jeans, " said Deedrick.

CNN: Simpson case winding down

"Japanese traditional houses have paper screens with mica paint which is a very subtle medium, giving a shiny appearance to recreate the pattern of the water, " she said.

BBC: Margaret Kerr unit in Melrose artworks taking shape