{"id":71644,"date":"2022-07-07T15:26:00","date_gmt":"2022-07-07T19:26:00","guid":{"rendered":"https:\/\/www.shortform.com\/blog\/?p=71644"},"modified":"2026-01-22T14:52:42","modified_gmt":"2026-01-22T18:52:42","slug":"the-beginning-of-infinity-david-deutsch","status":"publish","type":"post","link":"https:\/\/www.shortform.com\/blog\/the-beginning-of-infinity-david-deutsch\/","title":{"rendered":"The Beginning of Infinity by David Deutsch: Overview"},"content":{"rendered":"\n

What is David Deutsch’s book The Beginning of Infinity<\/em> about? What are the main takeaways of the book?<\/p>\n\n\n\n

In The Beginning of Infinity<\/em>, David Deutsch makes a counterargument to the belief that there is a finite amount of knowledge in the universe. Deutsch rejects the idea that humanity will someday know everything there is to know.<\/p>\n\n\n\n

Read below for a brief overview of The Beginning of Infinity<\/em> by David Deutsch.<\/p>\n\n\n\n\n\n\n\n

The Beginning of Infinity <\/em>by David Deutsch<\/strong><\/h2>\n\n\n\n

In The Beginning of Infinity<\/em>, David Deutsch rejects the idea of finite knowledge as both wrong and harmful. He believes it leads to complacency at best (there\u2019s no need to learn because we already know everything), and pessimism at worst (we can\u2019t advance any further; this is as good as civilization gets). Deutsch argues instead that there\u2019s no <\/em>limit to knowledge. <\/p>\n\n\n\n

His reasoning is that people actively create knowledge through questions, studies, and calculations, rather than merely \u201cfinding\u201d it by experiencing the world around them. Furthermore, Deutsch believes that because there\u2019s no limit to how much knowledge we can create, there\u2019s no limit to how much we can improve the world<\/a>.<\/strong><\/p>\n\n\n\n

What Is Infinity?<\/strong><\/h3>\n\n\n\n

Before we can understand infinite knowledge, we must first comprehend the idea of infinity. Infinity is a hard concept to grasp logically\u2014in fact, Deutsch believes that the human mind has a natural aversion to it.<\/strong> Many people find it easier to think of infinity as some arbitrarily large number, but that\u2019s a poor approximation. Instead, we can illustrate the concept of infinity<\/a> with a simple thought experiment<\/a>:<\/p>\n\n\n\n

Imagine a person standing in an endless hallway. He walks an endless distance down that hallway. Once he\u2019s done so, there\u2019s still an endless distance ahead of him. He repeats this process countless times, but there is still an immeasurable distance between him and the end of the hallway. This is why Deutsch says, no matter how much knowledge we create, we\u2019ll never know everything\u2014in other words, no matter how far we travel, we\u2019ll never reach the end of the hallway.<\/p>\n\n\n\n

It\u2019s also why imagining infinity as a really big number doesn\u2019t work: Infinity doesn\u2019t obey the same rules as finite numbers do.<\/strong> Instead, it may help to picture infinity as an unreachable destination; no matter how long we travel, we never get closer to it.<\/p>\n\n\n\n

Different Schools of Thought<\/strong><\/h3>\n\n\n\n

Empiricism <\/em>is the belief that all knowledge comes from observation and extrapolation. A related philosophy, Positivism<\/em>, says that the only true knowledge is scientific, and all scientific knowledge can be proven or verified through experimentation. In other words, Positivism argues that knowledge doesn\u2019t have to originate with experience, but it must be confirmed by it.<\/p>\n\n\n\n

Deutsch rejects both of these philosophies. He says that it\u2019s impossible to gain true knowledge just from observation because we also have to interpret whatever we observe.<\/strong> In Deutsch\u2019s definition, \u201ctrue\u201d knowledge is free from subjectivity, but observation is run through the filter of our past experiences, beliefs, and assumptions. Therefore, observation is not <\/em>a reliable way to learn new information.  <\/p>\n\n\n\n

Instead, Deutsch argues that knowledge comes from conjecture and testing\u2014<\/em>in other words, we come up with new ideas based on what we already know, then experiment to see if those ideas hold up under scrutiny. Note that this differs from Positivism because much of what we know can\u2019t be directly observed or experienced. For example, people believed that the sun rotated around the Earth based on what they saw and felt: The Earth seemed to be holding still while the sun, stars, and other planets moved around it. However, careful observations and mathematical calculations eventually proved that theory wrong. <\/p>\n\n\n\n

Learning Mimics Evolution<\/strong><\/h3>\n\n\n\n

Interestingly, although people create knowledge intentionally while evolution happens naturally, Deutsch says that the two processes have several things in common:<\/p>\n\n\n\n