> Something that have not worked in the past might work today because of the changed environment. Don’t you agree?
Applied as you have described it, this advice would prevent us from ever learning from the past. Why not try Stalinism again? It might work today because of the changed environment. You need to explain specifically what has changed so that tariffs might be a good idea now even when they have repeatedly not been so in the past.
Doesn't your argument also apply to the other side though? That we can't just say "It didn't work in the past so it won't work now" without any context or actual evaluation?
Applied as you have described it, this advice would prevent us from ever learning from the past. Why not try Stalinism again? It might work today because of the changed environment. You need to explain specifically what has changed so that tariffs might be a good idea now even when they have repeatedly not been so in the past.