why cdu has to be a lt investment, page-8

"most would agree that the JORC code hasn't supported the geology of the mine"

that's a furphy and cdu have already told us why.
see page 30 of the latest resource statement.

the algorithms they use for the estimation are applied to domains the company themselves have constructed.

In other words, the company supplied the interpretation of the 'geology'.

If the estimate or geology are 'wrong' it isn't because of the JORC code or the algorithm - it is the interpretation.