mach1.9pants
Hero
They're the worst.
Thaumaturge.
I've got four, so I should know

They're the worst.
Thaumaturge.
So you're saying he's always the first to die?The hit points are too low. 8 hit points, this character will die the first encounter or first challenge. This wizard better be best friends with the Cleric who can Revivify.
They're the worst.
Thaumaturge.
I've got four, so I should know![]()
So you're saying he's always the first to die?
Well that's the first time I've read that article. Many of the problems he identifies, especially those with illusions and invisibility, are clearly dealt with in AD&D. On top of that, visible light is just a form of radiation. In terms of science, you CAN make something invisible to the infra-read spectrum because it's also just radiation, but radiating at a lower frequency. In fact I recall reading that scientists have already made things invisible to the infra-red in the lab.
In addition, I think his use of science isn't justified for D&D. You would need to have an eye over 1m in diameter to see into the infra-red. So clearly, infravision is some sort of semi-magical or supernatural attribute. As such, it doesn't have to conform exactly the laws of science. Perhaps some new form of advanced biology that science hasn't discovered could allow for smaller eyes, but based on what we know, it's just not possible anyway.
Yes, but he was pointing out that a warm creature or object would also heat the air and other objects in contact with it, which would also radiate in the infrared, thus betraying its presence unless the invisibility or other effect also made its immediate surroundings invisible. The point being that if you make it too science-y (e.g. by calling it infravision instead of darkvision), it can get complicated.
Exactly Sean's point also. Why describe it as seeing infrared radiation, and bringing up all the complicated scientific repercussions, when darkvision is easier?
Besides, as far as we know, "seeing" into the infrared (as opposed to sensing the presence of heat, like a pit viper) isn't an ability possessed by biological organisms. (Into the ultraviolet, yes, which leads us to ultravision and back to its modern descendant, darkvision.) Of course, neither is the ability to breathe fire, but that hasn't generated nearly as many table arguments over the years.
While it was full of flavor, it was also full of problems. Check out SKR's rant why it was switched to Darkvision here: http://www.seankreynolds.com/rpgfiles/rants/infravision.html
I wish more D+D developers published rants like these.