Change the rules of evidence and always use DNA testing. Then, just to make sure you could use WATERBOARDING. It’s incredibly reliable and doesn’t harm anyone.
Waterboard the man or the woman? A google search using “lied about rape” got me 6,620,000 results
How does DNA prove whether or not sex was consentual? Given that a woman is pregnant there is a strong presumption that hetrosexual sex occurred. DNA is useful for identifying the father, but more or less worthless for determining consent. My guess, something like 9 out of 10 false rape accusations identify the actual father.