To be clear, most prosecutors did not present these cases without lab tests. How they screen these cases is opaque. I suspect but have no evidence to support that they filter some cases out based on lack of lab testing.
The same held true for he said - she said domestic assault cases. No eye witness, no physical evidence, no recording, just accusations does not constitute probable cause. Again, most prosecutors didn’t bring these to us and when they did it was usually due to oversight due to the volume of cases.
With a couple of exceptions, the Harris County’s prosecutors who presented cases to our jury were excellent and IMO honest and impartial.
After jury selection on the first day, we had no contact or communication with the presiding judge. (She was an absolute moron and was unable to manage the selection process without heavy assistance).
Finally, you might think that we were a soft jury but that is wrong. When probable cause was established for an offense, we indicted. This occurred ~98% of the time. We followed the law and did our best to be impartial. In fact, on a couple of occasions we ordered investigations to be performed and deposed defendants and hostile witnesses face to face.
The things we saw were shocking and eye opening, even to a 60+ year old man who grew up between Denver Harbor and Northshore. There are evil people in our county.