He said a firm evidential basis needed to be established before any such campaign was introduced.
All of that is well established, but from here the evidential waters get murkier.
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This doesn't include sites or posts digging up evidential information, like the MacBook Air domain name stuff.
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Prosecutors have always insisted the investigation into the bombing remains live, and they require to keep the pieces for evidential reasons.
Mr Poots said he believed people had been reassured by the vaccine's effectiveness and emphasized there was no evidential link between it and autism.
Counsel for the police argued that while the material may cause her professional concern it would be of "evidential value" to the police investigation.
"Evidence relating to a number of other suspects has been presented to us as part of this investigation and our evidential reviews are continuing, " Mr Brisbane added.
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"A formal complaint can be made at any time in the future and police are then obliged to assess the evidential basis of that complaint, " the spokeswoman added.
But Mr Quinn's legal team said the High Court had failed to set out any evidential basis for the finding of contempt and said his imprisonment was wrong.
Mr Davies confirmed that science and a robust evidential base were key to reform and that he had asked officials to strengthen the evidence around key stocks covered by the Common Fisheries Policy.
Although no DNA was recovered from the Omagh bomb because it had exploded, Baxter believed that together the four failed bombings, and other bombings linked to them, "produced an evidential rope" which proved Mr Hoey had made the timers for all of them, including Omagh.
Asked whether he had spoken to a software company about getting technology that could "resurrect" e-mails - Mr Yates said he was not sure, but he didn't want to comment as it was straying into "evidential areas" and it was not proper to comment on it.
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The evidential value of entomology may come as no surprise to lovers of crime fiction, but the fact that it is scientists at the Natural History Museum - more normally associated with the fossilised remains of long dead plants and animals - who are pushing the boundaries of modern forensic science, comes as something of a revelation.
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