Conflicting Evidence
Joe Karam made much of the computer timing and the bloody sock prints but they are probably both red herrings, much in the same way that a rugby player feints a pass in order to hide their real intention of blunder busting all the way to the goal line.
The margin of error of the computer and of the witness testimony are too large and there is sufficient overlap for David Bain to have been able to do what the Prosecution claim.
The margin of error in the testimonies of expert witnesses over the origin of the footprints are also too large and both Defence and Prosecution scenarios are possible.
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Spin and propaganda
are frequently used tools for political and other kinds of publicity campaigns. Often the authors of such campaigns allow themselves to fall into the illusion that they speak for absolute truth when there usually exist alternative explanations that have equal credibility. -
Method tells a lot about a person. Someone trained in forensic science
is going to go about investigating a crime in a completely different manner from someone who has no training at all.