What is an import trait or skill for a scientist to have? ?

To be patient and able to accept that he may be wrong and willing to change his beliefs. I hope this helps.

Since I don't know the exact answer your looking for i'm going to list some

1.) Strong Observational skills

2.) Curiosity

3.) Logic

4.) Creativity

5.) Skepticism

6.) Objectivity

    I hope this helps :)

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .