One of Plato's theories concerns the validity of different forms knowledge. He claims that statements made about the physical world are little more than conjecture about shadows and reflections, whereas real knowledge concerns the eternal and perfect forms, which reason leads us to certainty about. This is called:

The divided line theory

Explanation:

The divided line theory was proposed by Plato. This theory was explained by Plato. He described the visible world of the images and the world made by us.

For instance, the sun is not only visible but even make the visibility of other objects and make them nurture and develop their growth. There is much religion that makes the sun a god which is a good thing. The division between intelligible and visible is like the material and ideal.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.