Guys there's something else worth mentioning here.
Einstein had had different conviction about theories. Briefly, in his idealistic ecumenical thoughts, he referred that a real 'Theory' should be articulated and conceived ipso facto, without any evidence whatsoever, before the observations can corroborate the theories predictions.
In his own context Einstein you know used to devise the intense 'Thought Experiments', something so insightful, ideation of which can only be possible in an Einstein's brain nerves. The slew of scientific developments taking place majorly before/after Relativity era had a different flavor: from Photoelectric effect tests to sprouting of Quantum Physics theories...you name it, all involved observation-research-theory evolution.
However, in only the case of General Relativity, there were NO experimental foundation put forth with the theory. The REAL evidences (1959+), [ not the Eddington one...that was essentially farce and exaggerated! ] came must after theory postulation (1919), and are still coming...
This is where Einstein is marvelous than it is thought to be. The beauty of a Theory is determined by its life it lives...Newton's ones lived three centuries. Einstein one has survived one...and counting.
In fact it has been referred that Einstein work on General Relativity during 1914-19 is a period of 'the greatest intellectual human endeavor by a single brain'
Refer Clark's Biography for more.
So there we are Eliezer, its not just about bits and observation for something to be conceived and articulated.