The majority of people cannot cut in a straight line, even when they've begun by drawing a clear guide with a pencil and a ruler. Naturally, the hand tends to slice paper in subtle curves, coming away from the rigid trajectory that would make edges look clean and crisp.
But instead of opting for a guillotine, the user could take advantage of the convenience and accessibility of Vector Scissors by Tamás Fekete. Still concept executed within a university course, this handy product really should become a reality.
The winning feature of these straight-cutting slicers is in the handles. They have been molded so that you can rest them on the edge of a table, using that level and linear surface as a physical guide. And as you successfully cut in a straight line freehand, the special blades will reduce your risk of paper cuts.