Peter Harrison provides an account of the religious foundations of scientific knowledge. He shows how the approaches to the study of nature that emerged in the sixteenth and seventeenth centuries were directly informed by theological discussions about the Fall of Man and the extent to which the mind and the senses had been damaged by that primeval event. Scientific methods, he suggests, were originally devised as techniques for ameliorating the cognitive damage wrought by human sin. At its inception, modern science was conceptualized as a means of recapturing the knowledge of nature that Adam had once possessed. Contrary to a widespread view that sees science emerging in conflict with religion, Harrison argues that theological considerations were of vital importance in the framing of the scientific method.

媒介学（Mediology）这个新名词的第一次出现，是在德布雷1979年的著作《法国的知识权力》中。按照作者后来的阐释，从学科意义来讲，媒介学不是媒介社会学，也不是符号学，与传播学的路数也不同，因为它不聚焦孤立的个体，而是采用一种跨学科方法，论述范围或论据来源包括历史（技术史、书籍史、美学理论和历史）和信息传播理论。
与传播学界的工具主义的概念划分不同，作者在《普通媒介学教程》中提出的最新颖而富有想象力的核心概念是媒介域（mediaspheres），就是以信息传播的媒体化配置（包括技术平台、时空组合、游戏规制等）所形成的包含社会制度和政治权力的一个文明史分期。按照媒介学的史学观对技术与文化的关系的界定，人类文明史被划分为三个不同的媒介域：文字（逻各斯域）、印刷（书写域）和视听（图像域）。
媒介学可能在学科身份、学理基础、专业的合法性和概念的逻辑性等方面遭遇种种评判，但无论在何种批评语境中，媒介学所提出的问题、在演示中再现的场景、所进行的历史阐释，都可以提供反思资源。媒介学不一定保证提供新的知识，但肯定是认识的新形式，从而为我们理解理论与现实的关系提供一种新的参照。