Howlin, that is BS. If he provides a source then you judge the source, not the person that provided it.
His (his/her) point is that people have been convicted and received the death penalty only to be found innocent later. Is this true? And if so, what is the point of the personal attack you wage to discredit it?
I somewhat missed your point on this one. You did call for a credible source. Sorry.
You may consider the fact that SOME of us on FR deal in facts to be a personal attack, but most of us don't.
He said it; let him back it up; or have you learned nothing being on here for 4 years?