I'd be very curious to see the link about Idaho's "affirmative defense" requirements re timing prior to trial, but regardless of that,
IMO it's important to understand what an "affirmative defense" is...
An affirmative defense is, "yes, I did it, but...", and states have different ones depending on the law; an affirmative defense is not the same as "Not Guilty". (Affirming = yes; defense = here's my reason).
In other words, an affirmative defense is a type of excuse or justification of the allegations, and would allow BK to admit,
but ...
In BK's case, unless there are circumstances yet to reveal (and that very well could be the case), it seems an affirmative defense is unlikely.
"Not Guilty" seems the more likely tack here imo, and the defense will not have to share their legal strategy on how they plan to get to "Not Guilty". "Not Guilty" will just be chipping away at BARD one way or another (experts, exculpatory evidence, the generic "LE zeroed in too early", etc.)
Neither AT nor the prosecution are required to share their legal strategy.
I.C.R. 16. Discovery and Inspection | Supreme Court
I wasn't going to post until the PH starts, but I thought it was important to share the definition of Affirmative Defenses so that it was handy for reference.
I don't mean to nitpick about legal definitions, but esp in this case, the "Affirmative Defense" is way gone from "Not Guilty", and it seems important to understand the difference, so sharing with those who may not know.
www.law.cornell.edu
This explains it pretty well in terms of theory:
5.1 Criminal Defenses – Criminal Law
affirmative defense
An affirmative defense is a defense in which the defendant introduces evidence, which, if found to be credible, will negate criminal liability or civil liability, even if it is proven that the defendant committed the alleged acts. The party raising the affirmative defense has the burden of proof on establishing that it applies. Raising an affirmative defense does not prevent a party from also raising other defenses.
Self-defense,
entrapment,
insanity,
necessity, and
respondeat superior are some examples of affirmative defenses....
There is some dispute as to whether certain defenses are actually affirmative defenses, or just standard defenses. For example,
in Florida self-defense is an affirmative defense but
in Ohio, it is not.
edited for formatting and clarification.