>> All a presumption does is shift the burden of production and proof to the state
Interesting point.
All things considered, I prefer the way our (TX) self defense and castle doctrine laws are written:
http://www.statutes.legis.state.tx.us/Docs/PE/htm/PE.9.htm#9.31
Thanks for the link. I've found that the words in the statutes are more or less meaningless, and the rubber meets the road in how those words are abused by the courts. See US Constitution and the Supreme Court application of the Commerce Clause, just to pick an example.
Not saying TX courts always get it wrong, but I did review how Alberto Gonzales and a majority of the TX Supreme Court twisted the "plain language" of the TX parental notification law relating to abortion.