More or Less returned with new evidence on the drug trial at Northwick Park one year ago, which so disastrously affected six healthy volunteers.
A recent inquiry under the auspices of the Royal Statistical Society has argued that the information given to volunteers about the risks involved has been seriously deficient. It adds that the data on serious adverse reactions in this kind of trial has not been properly collated, so that it has been impossible to say on past evidence how often they do go wrong.
You can hear what those risks are now thought to be on More or Less.
Plus the chimpanzees with better numeracy skills than people. More or Less presenter Andrew Dilnot found out how he compares.
And the first part of a wholly unscientific answer to an age old question: numbers - are they just a guy thing? Reporter Ruth Alexander investigates, somewhat mischievously, the evidence that women like them, but they just do not like admitting it.
And there was also the first report on a new way of conducting an election, being tried experimentally in the French presidential election, devised by a mathematician who hopes it may overcome many of the flaws in other voting systems.
Presenter: Andrew Dilnot
Producer: Michael Blastland
BBC Radio 4's More or Less was broadcast on Monday, 23 April, 2007 at 1630 BST.
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