Back in 1979 when I still needed a hairbrush, I wandered the campus of the University of East Anglia as a sporty nerd. I was the type of student who spent far too long in the library but covered up this flaw with an addiction to team sports and the associated drinking games.

At the time I barely noticed that some of my peers were far trendier. They took to barricading themselves in the University registry – the main administration building that housed the office of the Vice –Chancellor and senior management staff – for days at a time. They would drape sheets out of the windows with slogans denouncing whatever oppression they were feeling. Each time the occupation was for a political, and no doubt, worthy cause that usually involved solidarity (a big word back then).

The longest occupation lasted a week. It was in solidarity with mine workers who were on the receiving end of a crusade by Prime Minister Margaret Thatcher to break the power of trade unions. Both Thatcher and those trendy students were railing for or against a serious change.

Thatcher won of course and sent the country into a market driven phase that arguably brought some prosperity but also eroded much of the traditional political divide and eventually gave the UK ‘New Labour’.

Even nerds got caught up in some of the radicalism of the day, albeit safely. Many of us boycotted Barclays bank because they happened to have a subsidiary of the same name in South Africa. We didn’t realize that undermining banks was probably not all that helpful to the struggle against apartheid but it was a statement we could make on the way to the library. I had my account with the Midland.

Spectacles may be rose tinted when remembering such heady days, but it does seem that, naive as we undoubtedly were, the issues of the time stoked ire and action. Politics was controversial as societies across the world brought about change.

Serious change should be controversial.

It was a big deal to break down union power that itself had come about in a struggle to correct past wrongs in exploiting the workforce; the same kind of wrongs that were fought against in the apartheid struggle.

Today there are still hard and controversial choices to be made, especially about environment, climate and resource use, but we seem to have lost the ire and action that sets up any issue as controversial.

At best we get posturing and egoist rhetoric with an occasional ‘straw man’ to give the appearance of real debate. In short we have argument for the sake of it. Nobody seems to occupy the registry anymore.

As the Harvard philosopher Michael J Sandel puts it:

“When everyone – Democrats, Republicans, corporations and consumers – claim to embrace your cause, you should suspect that you have not really defined the problem, or framed it as a real political question.”

We seem to get this all the time in the age of the sound bite. Noone seems to define the problem.

Rosy or not we need some true controversy back. Real dissention forces us to argue our position from first principles. We must not just react against the alternative view but think it through and become convincing, drawing on as much logic as we can muster.

Do this often enough and we shake hands with our core truths and get to know the problem.

The result will be some argument, perhaps even a demonstration or two, but also some political innovation. There will be thoughts that are outside the narrow middle ground into which the bulk of the west has converged.

A little controversy might help us to find real solutions to the challenge of keeping 7 billion people happy without destroying nature or each other.