the designers of link layers and protocol implemntations, the army of operators who test signals, insteall repeaters, configure routers and hold conferences abo

the designers of link layers and protocol implemntations, the army of operators who test signals, insteall repeaters, configure routers and hold conferences about how to manage the global routing system would disagree. best effort implies 'no, we're not going to be climb that curve and get try to get to 100% reliability, because that would actually be counterproductive from an engineering perspective, but we're going to go to pretty substantial lengths to deliver your packet'