This is a serious matter and I know this is a standard "joke" in "the dojo" but a good prosecuter will look at a thread like this and will use it as the "frame of mind" that the man in the article had when he decided to confront the intruder.
That aside shouldn't we hope to feel compassion for another human being that has been seriously injured and possibly facing the end of his life? I'm only saying we shouldn't make the fact that someone stabbed a laughable matter.
Sorry Lyle but anyone who goes into a house armed with a knife (whether the couple are elderly or not) deserves all they get.
It could so easily have been "Intruder stabs elederly martial artists in their own home"
Well done Mr & Mrs Dowdy