Recent content by s__1000

Ah but I don't understand his latter paragraph: where I think he asks the truth of the geometrical proposition that two points on a practically rigid body always correspond to the same distance independent of any changes in the body's position. Here we can ask the truth of a geometrical...

yes I understand but I am asking generally can it be proved -

so it cannot be proved - this axiom of Euclidean geometry

Einstein says ' we cannot whether it is true that only one line goes through two points' ' We can only say Euclidean Geometry deals with things called straight lines to each of which is ascribed the property of being uniquely determined by two points situated on it, - What does he mean? and...