If you would demand a good faith estimate from a contractor to fix aleakyroof, it only makes sense to demand the same from a doctor to fix a creaky knee.
You also should have enough to cover life's inevitable, unanticipated expenses, like aleakyroof or dead furnace not just in your primary home but also in all of your investment properties (which likely suffered abuse and neglect on their way to becoming bargains).
Another debacle, this time involving DNA testing: Josiah Sutton served four and a half years for rape after the Houston Crime Lab tied him to crime-scene DNA. The lab was later found to be rife with problems, including aleakyroof that let rainwater contaminate evidence.