Yuku free message boards

Isn't there a difference between the effects of hitting a rock and hitting a pile of Sand/Ground/Dirt?
Yes, just as there is a difference between the effects of hitting a crystal from hitting a rock, specially if that crystal is a diamond. Also crystals have other properties such as light refraction, anisotropy (some properties vary depending on their directions) and of course different conductivity.
Isn't poison a variety of chemicals which can also be found in their own unique habitat or animals? And it can be in physical form too.
I´m pretty sure smog compounds such as sulfur dioxide (Koffing) and a rattlesnake´s venom (Ekans) isn´t the same substance, so we´re not talking about the same kind of poison. We´re talking about the effect. Then why did I bring this into the argument in the first place? Because it´s okay to have types like this just as anything; it´s just a game.
Ice doesn't conduct electricity, doesn't have the same effects, is an insulator of heat, and Ice type is technically cold type anyway.
Oh, come on! In that case wouldn´t a vapor type make sense too? Where is the fire in that anyway? Wouldn´t this call for a heat type?
Nevertheless a vapor pokémon is most likely to be made fire/water or wind/water because unlike heat type, ice is there, and is cool. (Yay ice type!) 
Because that's a naming issue. The type already exists, I'm not saying that the current ones are perfect, I'm saying that the others would be useless with the originals present.
Okay, this post has been the most informative to me. I understood a couple of things here:
-You are in favor of what types we have in the present, however they are named.
-You just limit to create types that deal with attributes that pokémon could have and the types don´t cover.
But here is something to ponder: If the games themselves give out the same "poison" type to two different kind of chemicals, the same "dark" type for more than one thing (evil nature, dark habitats and even "black magic") what would they have done if they hadn´t ever made a rock type? Most probably they would have made any rock-type pokémon that currently exists, ground-type. (c´mon we know they would have) And your argument for not having a rock-type would have been "it´s just a variation of ground." So we´re just doing what Gamefreak´s doing, finding some type variations that could have been. 
I'm not even sure how this is related to our argument.
The last part was the key. What would our argument have been if they had chosen different types? Exactly the same as it is now.

In conclusion, nice and valid points, nevertheless there is a reason on why adding a new type isn´t that easy: They could have already been covered by almost every type there is now, therefore it calls for a type change. And the fan mobs will form. Therefore this topic is mob-safe, because it´s just for fun!