Well he’s a fool because their costings are clearly available for all to view.
https://labour.org.uk/wp-content/uploads/2017/10/Funding-Britains-Future.pdf
I understand your frustration. And you may well be correct.
For shits and giggles, here is Labours mission statement;
https://labour.org.uk/missions/
Now come along Psycho, I’ve got several ditches to fill before the farmer next door gets back from wintering in Ibiza.