Not if you are a Moon Hoaxer, or Flat-Earther, or Chemtrails follower. Falsehood will make sense to anyone who thinks without knowledge. Or thinks mistakenly they have knowledge. Explaining one's credentials is simply the bare minimum in establishing that the testimony is expert, and not just witnessing a car crash.

Not if you are a Moon Hoaxer, or Flat-Earther, or Chemtrails follower. Falsehood will make sense to anyone who thinks without knowledge. Or thinks mistakenly they have knowledge. Explaining one's credentials is simply the bare minimum in establishing that the testimony is expert, and not just witnessing a car crash.