He would have to convince his wife who participated in it, so he can't lie about everything. To her, he can pretend two water types taste the same when really t

He would have to convince his wife who participated in it, so he can't lie about everything. To her, he can pretend two water types taste the same when really they don't, but he can't pretend the opposite. He can also lie to himself with subconscious bias. The point of blinding is that you can suffer from this even if you're trying to be honest.