Then why even mention it? This whole discussion is about Light. I just assumed you were comparing it to Electricity and Light, since the rest of the thread is about that relationship.
I'm wayyy too argumentative since I got Phoenix Wright. I'm going to bed now.
He and Raikazu have both proven that they have no idea what someone is doing when they use someone else's logic to come up with a hypothetical situation that thus disproves their logic.
Bishopk is right. Light is not inherent in electricity, or even fire for that matter (which I'll explain later). Water IS inherent in ice, since ice IS water. While it's SOMETIMES true, like you said, that pouring water into a cup doesn't turn it into ice, that depends on the environment. You can easily go up to Canada in January and pour some water out the window of your heated car and watch it immediately turn to ice. This is a not a reaction that requires energy, it happens naturally. Water DOES form ice. Water at room temperature is a liquid. Because of unique bonds known as Hydrogen bonds are present, water in its liquid form is actually is more dense in its liquid form than in its solid form ice (which is why ice floats in water). When the environment meets certain conditions (0 degrees Celcius and standard atmospheric pressure) water naturally turns to ice by having the hydrogen bonds breaking and the particles slowing down greatly. To say that water doesn't form ice is just chemically false. And laughable even.
As for fire, let's take a closer look at what fire is, or what causes fire.
Fire is an occasional product of a combustion reaction, which takes an organic compound and oxygen (and often times energy, though it CAN happen spontaneously depending on the environment and the organinc compound) and exothermically creates water and carbon dioxide. As far as the actual fire goes, it takes place where intense exothermic reactions are taking place with a gas, typically the oxygen in the air and the carbon dioxide from the reaction.
Light is independent of this. Not every combustion reaction brings about light. Burning alcohol is invisible to the naked eye. Likewise, when there is a fire, the fire itself is not the light. The fire gives off particles called photons which itself are light.
As for other sources of light? That's simple. Just because you don't have a good knowledge of Chemistry, doesn't mean those sources don't exist. ;)
While it's true that the most COMMON sources of light come from the Sun, incandescent light bulbs, and fires, all of which are the sources already mention and used in your argument, there are plenty of other sources of light which do not use or require or even have anything to do with either of those.
For example, take LED. LED stands for Light Emitting Diode. These are made from atoms which emit and absorb light at various energy levels. In this case, light emmision is spontaneous. Other examples of spontaneous emissions include gas discharge lamps (neon lamps/signs, and other gas-lamps), and lasers.
To get even more technical, and to just cover all my bases in case you say "lasers are powered by electricity", let it be known how a laser works. A laser works by a process known as stimulated emission, in which matter gets perturbed by a photon and loses energy, resulting in the production of another photon. Basically to make a very complicated process short and simple, this process repeats itself for the creation of a beam of light known as a laser, and this whole process only takes matter and another photon, and therefore does not require electricity.
Moving on, other sources of light that go beyond thermal/electrical means include chemoluminescence and bioluminescence. Certain chemicals produce visible radiation (light) on their own spontaneously. Likewise, certain living organisms such as fireflies have these chemicals, and in this case it is known as bioluminescence.
There are more sources than that, but I think that's enough to prove my point.
Do you want to continue arguing this? I've pretty much just disproved every single argument you all have made. If you want to stick to your opinion that it shouldn't be added, which I'm sure you will, that's fine with me. However the reasons behind your opinion have been made clear and I have taken all credence away from them.