I mentioned earlier how hard it is for some news organizations to say, "2+ 2 = 4," as opposed to "experts say 2+...."  A few reader updates.

1) Truthiness in Dallas. A reader sends a picture of a plaque at the site of the Texas School Book Depository Building:

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The reader -- a visitor to Dallas rather than a local -- adds, "I was just stunned by 'allegedly' and the inscribed underlining and circling in the bronze plaque, which I hope comes thru in the shot."

2) Truthiness at CNN. Competent medical authorities have established beyond reasonable doubt that a seminal British study "showing" that childhood vaccinations caused autism was a fraud. Not just wrong in its conclusions but deliberately faked. But this (non-bylined) report from CNN presented the latest debunking with "critics say, the author disagrees, who can tell?" truthy "balance." Interestingly, as Jay Rosen pointed out in a note, CNN's Anderson Cooper did a much more straightforward "this is a fake" report on his show. More background here.

3) Truthiness in Tunnels. A reader in Sydney quotes (and dissects) a study in which "experts claim" that digging a tunnel for an underground road is more expensive than building on the surface. Jarrett Walker, a transportation planner in Sydney, asks:
>>Why did we need "state planners say" in this sentence?

State rail planners say it would be several hundred million dollars cheaper to build aboveground tracks ...

All other things being equal, underground construction is more expensive than surface.  This is an easily verified fact about the universe, readily found in any transport engineering textbook, so it's misleading to describe it as though it's an allegation.<<

Experts say I am grateful for these contributions.