Just caught the economist she is quoting/following in her policy. His view is that to boost the economy you need to put more money in people's pocket and they will spend it on goods and services if they are individuals and on research and innovation vif they are a company. I am not sure that works when inflation is high. A tax cut will not have people buying more rather inflation means a tax cut allows them to buy what they bought before. There will not be a boost.
However the main thrust of Patrick Minfords economic solution is free trade. That gives cheaper goods therefore more sales therefore growth. Truss's problem is brexit has not given free trade rather the opposite. It has put tariffs on our goods which prevents growth. Minford would abolish all tariffs everywhere. That is not within Truss's gift. Only removing our tariffs will give an economic boost but not to Britain.
.
Minford was *the* economist who was wheeled out before the Brexit referendum to balance the other economists who were saying that leaving a customs union with the UK's largest trading partner would make the UK poorer.