but I have no idea how to test the theory.
I dont have that equipment, nor the expertise to use them, but i have used a microscope before to examine dies. You can probably just use a regular microscope for this scale, and The LED even has a clear lens to see right into it. I still wont be bothering to do that. Instead I built the thing, and have been running it as a test to see how long it will take to fail, and it has shown no signs of failure yet.
Its been months with no sign of dimming, ......
Engineering isn't about "you cannot do that", or "that's wrong". Engineering is about knowing why you cannot do it so you know when / where you can do it.
Leds, especially high brightness leds, behave far more like resistors (at high current levels) than like diodes,
the resistor really is there to provide some negative current feedback
the datasheet lays it out clearly for you.
but im pretty sure everyone here knows about that stuff,
The reason casino owners and lotteries make money is because people are greedy, not uninformed.
Where do you get resistors for less than one cent each? I get them cheap on the internet, and they are 2-5 cents each, in packs of 100 or more.
As an aside, this is easily my favorite thread of the new year.
Oh poor misguided