I read this article in the New scientist (Feedback) today.
I saw another example in the guardian last week.
"deployed helicopters to drop sandbags the size of elephants"
What else should be measured in elephants?
"SEARCHING for metaphors to illuminate the meaning of numbers can all too often lead writers into dark places. Mary Vango, for example, was a bit surprised by what the magazine of the UK consumer rights group Which? had to say in a report on food packaging: "The average bacon packet was nearly 15 grams and we [in the UK] eat about 50 million packets of bacon a year. That's 7500 tonnes of packets, the equivalent of 50 blue whales."
We can't help thinking: "Mmm - blue whale rashers." We also can't help thinking, like reader Jeff Gottfred (24 April): "What's that in elephants?"
Enter UK newspaper The Guardian , which announced in an article about melting glaciers in Greenland: "Scientists put the annual net loss of ice and water from the ice sheet at 300 to 400 gigatonnes" - and then reached for "...equivalent to a billion elephants being dropped in the ocean". The paper later removed the metaphor, but not before reader Martin Midgley sent us this comment: "According to my maths, that means an average elephant weighs in at 300 to 400 tonnes. The story is quite terrifying enough without visions of these gargantuan beasts, each almost as heavy as a million squirrels, or 70... er... elephants."
Worrying as that sounds, it is apparently nothing compared with the number of elephants that already exist in the ocean. Several readers were quick to inform us last month that an item on the Australian ABC News website states: "An army of bacteria weighing as much as 240 billion elephants is lurking in the depths of the oceans, researchers say."
And there's more from Mary Vango, who spotted the BBC's Focus magazine stating confidently: "The total amount of water in a typical cloud weighs as much as 200 bull elephants". Would those be African elephants, the smaller Indian ones, or the gargantuan Guardian -reading elephants that keep falling on our heads?
It is all getting rather difficult to comprehend - but James McMillan takes us into the murkiest territory yet. He reports the Discovery Channel getting stuck in its attempt to quantify pressure and ending up telling us that special concrete for bank vaults is "ten times stronger than normal concrete: it can withstand pressure of up to 12,000 pounds per square inch... That's the equivalent of 100 elephants dancing on stilts".
At this point, we give up on the elephants. Our imagination just can't cope any more.
I saw another example in the guardian last week.
"deployed helicopters to drop sandbags the size of elephants"
What else should be measured in elephants?