[3.5] Ways to learn spells from a different class list

[WhatBigTeeth]

Because Expanded Knowledge explicitly allows this. Extra Spell does not.

You appear to be responding to the argument that Extra Spell allows access to other spell lists because it is similar to Expanded Knowledge, which does that. That's not my argument.

My post is meant to illustrate that Curmudgeon's argument is baseless because it is founded on an assumption which is simply not true: that all the details of cross-list materials would be made clear in the feat if cross-list spell learning were allowed. Expanded Knowledge provides an easy illustration that such an assumption shouldn't be the case: a Psychic Rogue could take Expanded Knowledge for Graft Weapon and be in exactly the situation Curmudgeon describes with Control Water, but that situation would not imply that Graft Weapon is an inappropriate selection for the feat.