New browser plugin stops people bamboozling you with numbers

Dictionary of Numbers provides that much needed context.

I've written before about how numbers without context are meaningless. Remember the claim that "every year in Spain alone… between 6 and 18 million birds and bats are killed by wind farms"? We're used to things that number in the millions being a lot, but without context, our intuitions can mislead us. So, for instance, if I claimed that "every year in Spain alone, between 6 and 18 million bytes of pornography are downloaded", your gut reaction might be that the Spanish are porn-hungry sex-fiends – until you realise that a moderately sized picture file is around one million bytes. That stat would in fact make Spain one of the most prudish countries in the world.

So, for the wind farm example, we found a few comparisons: in the US, power lines killed 130 million birds a year, while windows took between 100 million and almost a billion each year.

That's useful – and served to put some scaremongering at rest – but we can't all be looking up US Department of Agriculture papers when there's a potentially misleading statistic. So rejoice! For there is now a Chrome extension that can do the same thing automatically.

Dictionary of Numbers "searches through the page for numbers it can understand, and when it finds one, adds an inline explanation for that number in human terms". What that means is that a report of a forest fire destroying 297,845 acres of land is followed up by a little square bracket telling you "[≈ Hong Kong]"; something 100m high is [≈ height of the Statue of Liberty (foundation of pedestal to torch)].

As Glen Chiacchieri, the developer of the extension, writes:

One could write Dictionary of Numbers off as a tool for mathematically-inclined folk, but the fact is that understanding and reasoning about numbers is an essential part of modern society. After all, it's important to know just how much of the United States was on fire.

Sadly, the extension doesn't yet have any comparisons for the figure "8 million birds", so when it comes to dealing with the critiques of climate sceptics, we're still going to have to do it the old-fashioned way. And while it's handy for money in dollars, pound sterling leaves it upset and confused. But there's a third problem with the plugin, as well. As Randall Munroe reports:

It can also come across as unexpectedly judgmental. Glen told me about complaint he got from a user: “I installed your extension and then forgot about it … until I logged into my bank account. Apparently my total balance is equal to the cost of a low-end bicycle. Thanks.”

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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New Digital Editor: Serena Kutchinsky

The New Statesman appoints Serena Kutchinsky as Digital Editor.

Serena Kutchinsky is to join the New Statesman as digital editor in September. She will lead the expansion of the New Statesman across a variety of digital platforms.

Serena has over a decade of experience working in digital media and is currently the digital editor of Newsweek Europe. Since she joined the title, traffic to the website has increased by almost 250 per cent. Previously, Serena was the digital editor of Prospect magazine and also the assistant digital editor of the Sunday Times - part of the team which launched the Sunday Times website and tablet editions.

Jason Cowley, New Statesman editor, said: “Serena joins us at a great time for the New Statesman, and, building on the excellent work of recent years, she has just the skills and experience we need to help lead the next stage of our expansion as a print-digital hybrid.”

Serena Kutchinsky said: “I am delighted to be joining the New Statesman team and to have the opportunity to drive forward its digital strategy. The website is already established as the home of free-thinking journalism online in the UK and I look forward to leading our expansion and growing the global readership of this historic title.

In June, the New Statesman website recorded record traffic figures when more than four million unique users read more than 27 million pages. The circulation of the weekly magazine is growing steadily and now stands at 33,400, the highest it has been since the early 1980s.