how so? you flat stated a bunch of hypothesis under the assumption they were theorys
I repeat myself; what I stated was the prevailing scientific opinion -- in most cases during most or much of the first half of the twentieth century. This would make them scientific theories.
I remarked on Plate Tectonics in an earlier "lecture." Now let me remark on the "which came first, large brain or upright posture" business.
With benefit of hindsight, anthropologists have remarked that it was the prevailing theory of the day that made the Piltdown fraud work (induced its unquestioning acceptance). It was also that theory that caused whoever it was who worked the fraud to design the "fossils" the way they were designed. (You have a human brained knuckle-walking anthropoid).
Of course we now know, because of Lucy and others, that the opposite is what really happened, and in Africa, certainly not in England.
By the 1950s, as the story is usually told, the evidence was getting intolerably contrary to the story the Piltdown evidence indicated, so much so that finally it was decided that the precious Piltdown fossils had to be scrutinized more carefully (and by then certain chemical tests were available that had not been around earlier). It soon became clear that Piltdown was a salted mine.
Revealing this fraud gave the creationists a field day, although of course they conveniently ignored the real message -- that evolution had indeed happened, just in a different order than earlier thought.
My point is that new evidence (mainly African discoveries, but also the exposure of Piltdown) resulted in the previous theory being turned on its head.
This illustrates why these descriptive pictures are called "theories" and not "facts." The description of a fossil is a "fact," (assuming it is done right), but the explanation of how the fossil fits in with other fossils and what it tells us about what was happening, is theory.
Theories are not hypotheses. Theories reflect prevailing opinion, and are stories -- explanations -- to help with the human desire to have understanding as well as knowledge.