@SteverRobbins @LazarusLong13 It's both. They wouldn't put their name on it if they didn't have high confidence and thought it could turn out not to work and backfire. They'd just shut up and sell filters.
@SteverRobbins @LazarusLong13 两者兼而有之。如果他们没有高度的信心，并且认为这可能行不通并且适得其反，他们就不会把他们的名字放在上面。他们只是闭嘴并出售过滤器。