Good grief
Thanks DERG. It looks like a good read. I notice the paper releases the TRENT for Flight. Let us hope they mean TEST Flight. When modelling, it is precisely the novelty that Cannot be seen. Modelling relies on abstract Thought, it does not think, nor does it conclude. IMO. It is generally the "novelty" that kills when it strikes, having no follow on Fail safer. again, IMO.