I think actual experts in system science know that there are no silver bullets and - regardless of the actual failures in the UK covid management - would refrain from comparing Sweden and the UK.
It's called Nirvana concepts
. The first paper I find: https://jessebaltutis.wordpress.com/2014/07/14/130/
"Nirvana concepts, narratives and models have all been used to propagate certain policies and decision-making in the water sector. Each of these ‘discursive objects’ are used to design policies and support particular agendas, for better or worse. In a nutshell, they are:
– Nirvana concepts: underpin overarching frameworks of analysis (might never be attained, but offer a goal; are value-based, and often described as common sense, which makes it difficult to refute)
– Narratives: causal and explanatory beliefs (floods and droughts are due to deforestation, which can be stemmed with conservation efforts)
– Models: Policies or development interventions (often are implemented without consideration for context, capacity, resources available
– and ignore endogenous approaches by local actors)"