steve_bank
Diabetic retinopathy and poor eyesight. Typos ...
We cannot know that what we think of as the real world is not just some elaborate simulation (indeed, even if what appears to be real is real, our internal model of it is a simulation anyway). But who cares? If what we know about the world is, in fact, stuff we know about the simulation, then it's still useful knowledge. After all, we only interact with the simulation. It's useful to be able to predict how it will react to what we do.
In modern terms it is a simulation or emulation of perceptions. Visually we see photons, and photon detection, ie electromagnetic waves, is a large part of science. Outside of what we can detect and extrapolate from it we are essentially blind.
As I like to say, trhe question 'What is reality?' is meaningless.
In modern science we build models based on what we can see and detect and extrapolate.
Have you read Flatland? It is proably public domain on the net.
My paradigm is as follows. In an interview the late Carver Meade said 'I do not know if an electron exists but I know I can do useful things withnthe idea'.
QM showed there is no such trhing as an independent observer. What we observe is both that which is being measured and the experimental apparatus. I place a thermometer in a cup of water. The temperature is not just the water, the thermometer upsets the equilibrium.
The example is trivial. In the particle slit diffraction experiemnt it is not. Does what we call a partticle have both wave and partcle qualities at the same time or is the duality due to the experiment itself. There is no way to tell. As a result we build models on the experiment and find that the models have real world uses. Through science we build a mental picture or simulation of reality in our heads, how close it is to reality is not knowable.
The map is not the countryside.
From a show I waqtched there is an area of the brain where our nodel of reality resides.