It makes one think though, that if there were so little to them, after 20-30yrs, why then release them in a series of batches over the next few years?

At least Clarke points out that a hard core of 5-10% can not be explained and that the reports by RAF pilots and civil aircrew were "rarely" investigated further.

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"Where the telescope ends, the microscope begins. Which of the two has the greater view?" - Hugo

"Men occasionally stumble over the truth, but most pick themselves up and hurry off as if nothing had happened." - Churchill