In geometry, consider the size of a point. Mystically, the size of a point can’t be determined. Tell me how big a point is, and I’ll reduce it by half. Tell me again, and I will cut it in half again, and so on. Geometry does not tell us the size of a point, or even prove that a point exists. Now consider two points, on the Cartesian plane, and draw a line between them. Because you don’t know the exact size of the points, you can’t know the exact size of the connecting line, and so on. It can be said that it is important that the points are relatively the same size in order for calculations to become closer to an equality, but rarely are two points or two shapes, or even copies of points and shapes equal. The job of an engineer is to say, "Close enough." However, if one point is big, and one is small, in the real world, it can effect the size of a line.
Judaism has answers for this; the logistic size of points, and line on the Cartesian plane. We assume a "yud" is a point. In the same way, we assume the existence of a point is possible , so too we are able to have faith in G-d without logistical proof.
This is a letter yud:
We just believe that a point can exist because of a mystical meaning of the Hebrew letter “yud.” How big is a yud? It is the size that it is.
Likewise, we can fill the Cartesian plane with lines and shapes because of the mystical meaning of the Hebrew letter “tes.” Tes is like a pregnant woman. In creation, tes was pregnant and gave birth to the universe, in the same way that a mother gives birth.
This is the letter tes:
