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<blockquote data-quote="radmod" data-source="post: 5303228" data-attributes="member: 93008">Sorry, ir, but I don't see that &quot;edges of a square don't really count as a space&quot; exists anywhere. If you find it does say that somewhere, please let me know (it would help solve a few problems).Cover specifically mentions 'border'. Dictionary.com's first entry for border calls it &quot;the part or edge of a surface or area that forms its outer boundary.&quot;Obviously, if on your graph paper two points are connected by a line then you cannot draw a straight line from one to the other without drawing over (and through) the border of adjacent squares.Now, if you play that borders don't count (which a lot of people do and I have done) then the example of LOS in the PH (p. 139) would be wrong.Edit: I forgot to add that we tried at one point to define &quot;passing through&quot; as breaking the plane of a line, e.g. entering one side and exiting another. That allowed us to ignore corners (since you enter and exit the same side of the plane) and the above situation (since you don't break the plane). In the end, though, someone pointed out a flaw in that plan and we dropped it.</blockquote>

[QUOTE="radmod, post: 5303228, member: 93008"] Sorry, ir, but I don't see that "edges of a square don't really count as a space" exists anywhere. If you find it does say that somewhere, please let me know (it would help solve a few problems). Cover specifically mentions 'border'. Dictionary.com's first entry for border calls it "the part or [B]edge [/B]of a surface or area that forms its outer boundary." Obviously, if on your graph paper two points are connected by a line then you cannot draw a straight line from one to the other without drawing over (and through) the border of adjacent squares. Now, if you play that borders don't count (which a lot of people do and I have done) then the example of LOS in the PH (p. 139) would be wrong. Edit: I forgot to add that we tried at one point to define "passing through" as breaking the plane of a line, e.g. entering one side and exiting another. That allowed us to ignore corners (since you enter and exit the same side of the plane) and the above situation (since you don't break the plane). In the end, though, someone pointed out a flaw in that plan and we dropped it. [/QUOTE]

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