I remember attending a conference in Townsville (as an interested shareholder at that point) where there was a big presentation by TIS.
At the time, I met Prof. Harding and had a brief chat with him.
During this chat he started to mention an issue that he saw with the results where the graph had a very strong upward line but when it got to a certain stage, it levelled out without continuing the upward trajectory.
It seemed strange at the time but he suddenly changed tack with the conversation and went on with a couple of other comments and then excused himself to talk with others.
Just for interest.
Regards.............................