PRESENTATION OUTLINE
The Koyal Group Info Mag Scientists got it wrong on gravitational waves
It was announced in headlines worldwide as one of the biggest scientific discoveries for decades, sure to garner Nobel prizes. But now it looks likely that the alleged evidence of both gravitational waves and ultra-fast expansion of the universe in the big bang (called inflation) has literally turned to dust.
Last March, a team using a telescope called Bicep2 at the South Pole claimed to have read the signatures of these two elusive phenomena in the twisting patterns of the cosmic microwave background radiation: the afterglow of the big bang. But this week, results from an international consortium using a space telescope called Planck show that Bicep2’s data is likely to have come not from the microwave background but from dust scattered through our own galaxy.
Some will regard this as a huge embarrassment, not only for the Bicep2 team but for science itself. Already some researchers have criticised the team for making a premature announcement to the press before their work had been properly peer reviewed.
But there’s no shame here. On the contrary, this episode is good for science. This sequence of excitement followed by deflation, debate and controversy is perfectly normal – it’s just that in the past it would have happened out of the public gaze. Only when the dust had settled would a sober and sanitised version of events have been reported, if indeed there was anything left to report.
That has been the standard model of science ever since the media first acknowledged it. A hundred years ago, headlines in the New York Times had all the gravitas of a papal edict: “Men of science convene” and so forth. They were authoritative, decorous and totally contrived.
That image started to unravel after James Watson published The Double Helix, his racy behind-the-scenes account of the pursuit of the structure of DNA. But even now, some scientists would prefer the mask to remain, insisting that results are announced only after they have passed peer review, ie been checked by experts and published in a reputable journal.
There are many reasons why this will no longer wash. Those days of deference to patrician authority are over, and probably for the better. We no longer take on trust what we are told by politicians, experts and authorities. There are hazards to such scepticism, but good motivations too. Few regret that the old spoonfeeding of facts to the ignorant masses has been replaced with attempts to engage and include the public.
