Tech and AI: 8. The Algorithm

At its simplest, an algorithm is a sequence of step-by-step instructions designed to give a result. They are the building blocks of every computer program and are there to ensure every digital device gives the right results on request. For example, when we type a search query into Google, its algorithms try to give us the result we're seeking. In the case of Social Media, the algorithm's job is to keep followers on a platform, by showing engaging, interesting, and relevant posts. But over the years they’ve increasingly been entrusted with life-altering decisions, such as A-level results during the pandemic.

So how are algorithms being used? Why do many people distrust them, and try to beat them?

Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. Where is "the Cloud" and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.

Presenter: Spencer Kelly
Producers: Ravi Naik and Nick Holland
Editor: Clare Fordham
Programme Coordinator: Janet Staples