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<blockquote data-quote="Celebrim" data-source="post: 6997204" data-attributes="member: 4937">As a point of fact, all the free hydrogen that didn't bind with oxygen has long since fallen off the face of the Earth.&nbsp; As did most of the Helium.&nbsp; The Helium you fill up balloons with quite soon after floats into the upper atmosphere and gets blown off by the solar wind.&nbsp; So in a sense...as it applies to the elemental composition of the Earth...We don't know in the D&amp;D world what observations astronomers make.&nbsp; The 'fixed' stars under magnification might not resolve to points.&nbsp; Planets - if planets even exist in the skies over a given D&amp;D setting - may not have their own orbiting bodies, and presumably (as in Greyhawk) don't have phases of their own.&nbsp; Those planets don't demonstrate retrograde orbits from the perspective of an observer on Earth, and so forth.Perhaps, if you drop weights into clay, the penetration into the clay will be linear with both mass and velocity.&nbsp;&nbsp; If you grind a cannon underwater, eventually the water will stop heating up.&nbsp; If you carefully burn a consumable with a known weight, and collect all the by products, you'll find there is less total mass rather than more.&nbsp; Meat left in a sealed chamber will spontaneously erupt in maggots.&nbsp;&nbsp; And so on and so forth.&nbsp; We don't actually see these tests performed in D&amp;D, so we don't know how they work out.&nbsp; But we have no reason to suppose that they will work out as they do in our world, and some good reasons to suppose that they work out quite differently.</blockquote>

[QUOTE="Celebrim, post: 6997204, member: 4937"] As a point of fact, all the free hydrogen that didn't bind with oxygen has long since fallen off the face of the Earth. As did most of the Helium. The Helium you fill up balloons with quite soon after floats into the upper atmosphere and gets blown off by the solar wind. So in a sense...as it applies to the elemental composition of the Earth... We don't know in the D&D world what observations astronomers make. The 'fixed' stars under magnification might not resolve to points. Planets - if planets even exist in the skies over a given D&D setting - may not have their own orbiting bodies, and presumably (as in Greyhawk) don't have phases of their own. Those planets don't demonstrate retrograde orbits from the perspective of an observer on Earth, and so forth. Perhaps, if you drop weights into clay, the penetration into the clay will be linear with both mass and velocity. If you grind a cannon underwater, eventually the water will stop heating up. If you carefully burn a consumable with a known weight, and collect all the by products, you'll find there is less total mass rather than more. Meat left in a sealed chamber will spontaneously erupt in maggots. And so on and so forth. We don't actually see these tests performed in D&D, so we don't know how they work out. But we have no reason to suppose that they will work out as they do in our world, and some good reasons to suppose that they work out quite differently. [/QUOTE]

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