But some years ago - as I sat in the Firefly in Buckinghamshire, listening to a set of dullards talk about the recent occurrences in EastEnders - I realised I had to change the tenet of my Christmas.
If you're going to change the basic tenets of the character, why call the character Sherlock Holmes at all, unless you simply want to cash in on the name recognition?
It completely changes the whole tenet of the picture".
The evolutionary tenet "the more we change the world the more we stay the same" probably lacks accuracy.
"The e-mails don't at all change the fundamental tenets of the science," said Roger Pielke Jr., a professor of environmental studies at the University of Colorado.
Meanwhile US General Stanley McCrystal's honest description of the serious disunity at the head of Afghanistan operations may cost him his job, but beyond being a blow to the image of Barack Obama's conduct of the war is unlikely to change its central tenets, as the focus will remain on the general's naivety rather than the substance of his argument.
At the same time, those who deny the tenets of climate change science -- that the burning of fossil fuels adds carbon dioxide and other greenhouse gases to the atmosphere and warms it -- have seized on the hitauts, calling it proof global warming isn't real.
The structure of the cases is aligned with providing relevant, research-based and integrated materials that match the tenets of Vision and Change, wherein evolution is the basis for teaching and learning biological principles.
But it's got nothing to do with believing in the tenets of feminism or wanting to make any change.
But contesting the tenets of string theory is an academic exercise; denying the serious warnings about climate change has dire practical consequences.
One of the main tenets that Finerman instills in her students is that anyone can change for the better if they have a process and focus.
