This is what I have always told friends who are skeptical of counter-steering: on a back road with no traffic, get up to 25-30 mph. Take your left hand off the grip. What do you have to do to make the bike go left? Push the right grip to turn the front wheel to the left? NO! You will discover that you need to pull on the right grip, which is essentially the same as pushing on the left grip. If this little demonstration doesn't convince them about counter-steering, I can only conclude that they live their lives by what they "believe" rather than evidence-based science.