Re monetary grounds, this can be dealt with easily by saying we will continue to use the £ until or when we can do better. The refusal of Westminster to allow us to use it was a nonsense. They can't stop us using it.
Re economic grounds, I have striven to find good information but it is scarcely available. GERS is mince. I have, however looked at Nordic nations and have found as follows :
Country GDP comparison
|Country||Pop m||GDP||GDP per capita for year 2016 £|
|Scotland||5.3||157bn||30k ( i.e. pop 8.4% & GDP 8.3% of UK )|
It is scarcely conceivable that other countries of similar or smaller sizes than Scotland have better GDP outcomes than Scotland is portrayed as having. GDP is not a very useful economic indicator, but it is the best we have.
We are never going to find a true measure of income but it doesn't take much imagination to see that if we kept all the taxes raised in Scotland - income tax, commercial tax, whisky tax, oil tax, VAT, we could be well on our way. I raise all this here, because we must be ready to put forward a credible argument for independence well before we initiate a campaign, one feature of which will be economics and I trust that someone within the SIC, better qualified than I am, can pick this up and run with it.