I thought he kind of addressed that. > This means we can be more easily manipulated through the peripheral route. If we are convinced of something via the peri

I thought he kind of addressed that. > This means we can be more easily manipulated through the peripheral route. If we are convinced of something via the peripheral route, a manipulator will be more successful at using the peripheral route once again to alter our initial belief. emphasis mine. So basically, he claims that because peripheral information is more loosely held, peripheral beliefs are also more easily altered. Thus you have the rabbit hole effect leading to "pilling" and extreme beliefs.