What do you think, and how would it effect the world if we eliminated all art for 100 years, possibly longer?
Without art, no technological achievement would advance. This would include engineering and medicine. We could rely on what we already know, but things would stay as they are presently.
Complete elimination of art would mean no music, no pictures, no reading material except for tech manuals (without illustrations,) no variation of car designs (all the same,) all clothes the same, all houses the same, all buildings the same, all cities on Earth would look alike with no distinguishing features, all sports teams, military, police, fire depts would have the same uniforms (which would be indistinguishable from everyone else's clothes,) all food packaging would be generic with only text identifying what was inside, tools would have the same handles without variation (including surgical instruments, no curves, etc,) no variation would exist at all.
However, if geometry, trig, algebra, calculus, physics and other math and sciences did not have the visual concepts of lines and curves, triangles, trapezoids, rectangles, circles, spheres, cones, cubes, etc,... along with written symbols including numerals, alphabetic letters, and languages describing how to combine and decipher what they mean scientifically, nothing would exist as we know it today. So basically, none of the above would exist anyway.
To answer the question, cavemen would be one up on us with their cave paintings, discovery of fire and stone tools.
Les