A global proliferation of devices like the ones many manufacturers are showcasing at this week’s annual Consumer Electronics Show has made the number of bytes in the world balloon extremely rapidly. Since 2005, when analysts at market research firm IDC began publishing an annual estimate of all the bytes added to the “digital universe,” defined as “all the information created, replicated, and consumed in a single year,” the number has grown from 130 billion gigabytes to 2.8 trillion gigabytes in 2012. IDC’s latest projection is that by 2020 the number will reach 40 trillion.
Consumers have accounted for around 70 to 75 percent of that total each year so far—creating and consuming roughly 1.9 trillion gigabytes in 2012. Of the new data created by consumers in 2012, roughly 80 percent came from digital televisions, as shown in the chart below.
Data Created by Consumers in 2012, by Source
While in absolute terms the amount of data created by consumers will continue to grow quickly, the pool of data generated by things like industrial machines, vehicles, medical devices, sensors, and security cameras is expanding faster. This is shown in the chart below. In 2012, according to IDC, “machine-generated” data represented 30 percent of all data created, up from 24 percent last year and 16 percent five years ago.
Digital Information Created or Replicated Annually
The numbers show us that the world’s supply of what is commonly called “big data”—pools of analyzable and potentially useful digital information—is still relatively small. Much of the data generated by consumers, like that episode of your favorite sitcom saved on your DVR, isn’t very useful for analysis and is eventually deleted. More promising for big-data analysis are the readings from machines monitoring our world, from surveillance equipment and medical devices. And that’s just getting started.
DeepMind’s cofounder: Generative AI is just a phase. What’s next is interactive AI.
“This is a profound moment in the history of technology,” says Mustafa Suleyman.
What to know about this autumn’s covid vaccines
New variants will pose a challenge, but early signs suggest the shots will still boost antibody responses.
Human-plus-AI solutions mitigate security threats
With the right human oversight, emerging technologies like artificial intelligence can help keep business and customer data secure
Next slide, please: A brief history of the corporate presentation
From million-dollar slide shows to Steve Jobs’s introduction of the iPhone, a bit of show business never hurt plain old business.
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.