4D toys

Post by exikyut » Sun, Aug 05, 2018, 10:02 AM UTC

PhasmaFelis wrote: post #81

dsnuh wrote: post #76

Earlier quoted context omitted.

Did you play with only one eye open, or just one contact lens? I have worse vision than you (-8.0, -7.50), and I know that I can still function with just one lens in of needed. You definitely still have stereo vision even if one input is blurred. Your brain does quite a bit of compensation, and I can imagine if you operated this way for months that your brain would be even better at assimilating the noisy information…

Sulam is basically correct. I was born with strabismus (my eyes don't focus on the same point). To avoid perpetual double vision, my brain compensates by basically only using one eye at a time. It switches automatically when I'm looking to the side, and I can also switch consciously. (My color perception is very slightly different in each eye, it's weird.) It turns out that stereovision is the least important of seve…

Post by buckminster » Sun, Aug 05, 2018, 3:30 PM UTC

TheSpiceIsLife wrote: post #89

scrollaway wrote: post #28

Earlier quoted context omitted.

> Could we teach our brain to "think in 4D" and interpret these cues differently? To a certain extent probably, maybe if you spent hours and hours and hours in a VR simulation with 4D objects you'd starting getting a feel for it. I doubt you'd ever get as good as with 3D objects since we've been exposed to these literally every waking moment since we're born.* Good lord! Has anyone tried? This reminds me of the backw…

In the YouTube video he says: "So here's why I did. It was a personal challenge. I stayed out here in this driveway and I practiced about 5 minutes every day. ... after 8 month it happened ... in two weeks he (the son) did something that took me 8 months to do". Well, if you were serious about learning a skill you wouldn't just do one 5 minute session per day for eight months. A more appropriate training regime would…

Post by myfonj » Sun, Aug 05, 2018, 5:37 PM UTC

ozzmotik wrote: post #82

myfonj wrote: post #26

Earlier quoted context omitted.

Sad thing is that what we sense (see) is in fact just a poor projection into 2D (aka perspective) with some largely learnt concept of depth. If only we could sense space entirely with nothing "behind", not just from single point...

i think it's great that you represent it as a projection because that is exactly what it is: a representation of another, perhaps more "objective" (though I'm not sure at that level that attributes like that apply) data set. I think it's super easy for us to assume what we visually perceive has a 1:1 correspondence with the intrinsic nature of the data it is constructed from. and i think it's also important to realiz…

Post by grawprog » Sun, Aug 05, 2018, 7:18 PM UTC

rzwitserloot wrote: post #12

Here's a thought I had watching the bit with 2D man: Actually, the 3D view that 2D man does not understand but which we do understand is... still 2D. My screen is flat. You can use a 2D viewport to render a 3D scene in a way that is natural and easy to understand for us humans: A human watching the 2D scene can very quickly surmise from a glance at the viewport: Which objects are in the scene, and where are they loca…

Post by PhasmaFelis » Mon, Aug 06, 2018, 5:20 AM UTC

Franciscouzo wrote: post #104

exikyut wrote: post #101

Earlier quoted context omitted.

> (My color perception is very slightly different in each eye, it's weird.) I have comparatively uninteresting/normal vision (biggest issue shortsightedness) but I have this too. My left eye sees more blue, my right eye more red. Looks like the cone distribution wasn't perfect. I'm not sure, but I think the sun's rays don't have much of a blue component: my left eye gets fractionally less sore from bright sunlight, s…

The sun emits black body radiation with a 5800K temperature, which means its emissions peaks at yellow-greenish, but it still emits around 90% of blue compared to green