I'm curious how untargetted they are - if I'm searching for python, how untargetted is a python book ad? I'd be more inclined to purchase that rather than a rem

I'm curious how untargetted they are - if I'm searching for python, how untargetted is a python book ad? I'd be more inclined to purchase that rather than a remarketing adroll targetted ad that's just spewing me the same item that I purchased 30 minutes ago