John invited his neighbor Bill over to his house for a cookout, so Bill visited John. They talked with each other and exchanged ideas about this and that. They voluntarily traded with each other: John gave $25 to Bill for having mowed his lawn earlier. Bill’s kids would occasionally assist John’s kids in some chores if they wanted to do so, but Bill did not force his kids to help John’s kids. Bill and John got along fine and were friends and visited each other occasionally. However, Bill did NOT come over to John’s house unless he was invited, and did not burn John’s house down and kill his kids, and did not ever seek to kill John, take control of his household, or put some other person in John’s house as a replacement puppet head of household. Is Bill an isolationist? No. Neither are libertarians.