Dr Hondou's model, in short, was valid only in the case of a single passenger sitting in an empty carriage with an active mobile phone on every seat.

ECONOMIST: Are mobiles phones on trains dangerous or not?

Michael Portillo, though potentially formidable, returned to active politics after losing his seat in 1997 with the fire in his belly evidently extinguished, a fact confirmed by his strangely querulous bid for the leadership.

ECONOMIST: Bagehot

Never use a rear-facing child car seat in a seat protected by an active frontal airbag.

BBC: NEWS | UK | Politics | 'Use car seats up to age of 11'