As I've mentioned elsewhere I have recently moved to a plug-in hybrid car. The other day, when fiddling with the information system I accidentally got to a screen that showed miles per gallon (MPG) and the number - 174 made me think. Firstly, isn't a bit weird we still refer to miles per gallon when we buy petrol or diesel in litres? The only justification I can come up with is that I have better mental reference of what's a good MPG - maybe more than 40 - than I do MPL - I would have to do the conversion, rather than thinking in semi-metric. However, the main thing is whether or not this is meaningful. Traditionally MPG would tell you (roughly) how much petrol you would use for a specific journey. I can divide the distance by the MPG and get a feel for the fuel needed. But I will never do a journey where this is the case with an MPG of 174. What is really happening is that all my local journeys are done on electric with a nominally infinite MPG, while my longer journeys a...
I'm interested in why people believe odd things (and ignore the science), so I thought I'd give the podcast Marianna in ConspiracyLand a try. This is the work of Marianna Spring, the BBC's 'disinformation and social media correspondent', who has the cringe-making habit of referring to herself as 'A.K.A. Miss Information.' The first series follows the rise in support for conspiracy theories in the West Country town of Totnes, boosted by a conspiracy-spreading newspaper called The Light . Despite a certain naivety in the interviewing, I found the series interesting for two reasons. The obvious one is the nature and danger of conspiracy theories, particularly around subjects like vaccination and climate change. I'm always looking for ways to get scientific views across and (as demonstrated so well in the book I recently reviewed, Science with Impact ) , it can be really hard to get past conspiracy viewpoints. When someone can claim, as they do in one of Ma...