Policies that have been shown to be utterly corrosive wherever they have been implemented.
The evidence of Kwarteng's budgetary incompetence is actually already out there in empirical form and has been since the late 90's when John Gray published the first edition of False Dawn: The Delusions of Global Capitalism. Gray is, of course, noted for having predicted the 2008 crash.
In that book, Gray looks in detail at four countries that have experimented with neoliberal economic policies of the kind favoured by Truss and Kwarteng: the USA, UK, New Zealand and Mexico. In each instance, the imposition of these policies demonstrably increased economic inequality (thus confirming the well-known research of Richard Wilkinson and Kate Pickett), and reduced social mobility and cohesion.
For example, according to the Rowntree Report on Income and Wealth, inequality in the UK increased dramatically and quickly between 1977 and 1990, a period during which the poorest income groups ceased to benefit from economic growth, and there was a threefold increase in the proportion of the population earning less than half of the national income. However, by 1984-85, the richest 20% of earners enjoyed a 43% after tax share of that income, the highest since the end of the World War 2. Meanwhile, in New Zealand a previously non-existent underclass was created following the introduction of neoliberal policies (by a Labour government!), while in Mexico the size of the middle classes was substantially reduced, and the very poorest were driven into a state of even more abject poverty.
This time around I will leave it there. But I am quite happy, if need be, to author a much longer post citing multiple sources that all converge on the same conclusion, namely, that Kwarteng's brand of economics is already known to be an epic fail.
www.bloomberg.com