Fresco directed me to this thread so I hope you all wouldn't mind if I give my own view of the subject
The contents of "thought" IS NOT mediated by "language".
Language comes after the thought was created.
Another process maps your thought into words and senteces which you can then comunicate to other people or even have an internal conversation with yourself.
When I am programming or trying to solve some other problem I am not talking to myself although words might often pop in my mind here and there. Electrical impulses run around my brain solving problems, processing data just like computer does. Computer uses no words to solve problems or to think. It simply follows predefined set of rules processing input values and giving ouput values all in the bounderies of laws of physics. The very same thing goes on in our brain which is just a version of simple computer. At some point those output values can be words and sentences just like you can upgrade an existing computer program twhich already does some usefull calculations and add an extra function which would be capable of presenting such results as stream of words either by writing them on the creen or by creating sound waves, or using any other means of communitcation which might be consited of something else but words.
In time of the dynosours there were no humans but reality seams to have existed. Light that was traveling milions of years to get to use was created by some sort of reality when there were no humans.
If those two things are also just the product of our mind this theory might be considered as interesting view on the world but if this "view" is all this theory has to offer and there are no details, exepriments, rules, processes that in detail explains how this acctually functions, how EXACTLY is reality a social construction, then this becomes just one of many theories that holds no ground adn we would be much better off choosing some other theory that is able to explain its mechanism in detail and support it with numeros scenarios, experiments that all make sense inside the bounderies of that theory.