Last time I talked about how people today tend to live in
their own “silos” or “echo chambers” with their own friends who stay friends by
sharing the same thoughts and opinions.
When their beliefs are challenged, they turn inward looking for reasons
to reject or ignore the new information or turn to their friends and
like-minded news sources to relieve the tension. The technical word for this psychological
protection is confirmation bias.
Here are a few subjects to challenge widely held beliefs. Test your reaction.
According to prevailing opinion, acupuncture is ancient and
alternative, and therefore good. News from Great Britain reminds us that acupuncture, like any treatment, should be
able to prove its worth in well-designed clinical trials and everyday
experience. Medicine should never be
judged on reputation alone or by individual testimonials. The Guardian news tells us: Acupuncture is no longer recommended by the
National Institute for Health and Care Excellence as a treatment for low back
pain. “The u-turn comes after a review
of scientific evidence found that the practice was no better than a placebo in
treating those living with low back pain and sciatica.” After reviewing a large number of scientific
trials for effectiveness, “there was still not compelling and consistent
evidence of a treatment-specific effect for acupuncture.” The National Health Service, the single payer
healthcare in Britain, doesn’t want to pay for something that doesn’t work.
The Drug Abuse Resistance Education
program (DARE) is used in nearly 80% of the school
districts in the United States and in many other countries to discourage the
use of alcohol and other drugs. It’s
important to know how effective it is.
The program is very popular and appealing. It’s common to see it advertised on bumper
stickers and promoted by schools and the media, but does it really work or is
it a waste of time and money? The news
from alcoholfacts.org contradicts the conventional wisdom. “Scientific evaluation studies have
consistently shown that DARE is ineffective in reducing the use of alcohol and
drugs and is sometimes even counterproductive -- worse than doing nothing.
That's the conclusion of the U.S. General Accounting Office, 1
the U.S. Surgeon General, 2
the National Academy of Sciences, 3
and the U.S. Department of Education, 4
among many others. 5” [Note:
I left their links in the quote for anyone who wants to delve deeper
into specific sources.]
Locally grown is the new by-word for produce, despite
problems Chipotle had last summer in a number of their locations. We now have fresh vegetables in the grocery
store year round, but that doesn’t seem to be good enough. Some people are pushing for more locally
grown produce claiming it’s fresher and better for you. Fresher food generally tastes better and
delivers more nutrients – that’s why I have a vegetable garden in the backyard
every summer – but there is one fly in the ointment. The assumption that the local food system is
as efficient and better controlled than modern farming is wrong, as
freakonmics.com reports. “Today’s high
crop yields and low costs reflect gains from specialization and trade, as well
as scale and scope economies that would be forsaken under the food system that
locavores endorse.” Local food is
harvested with less efficient methods and delivered in smaller volume leading
to higher price – good for the middle class foodie who endorses the practice but
another hurdle for the poor. Those who
believe commercial farming is wasteful and polluting, have never seen farm
equipment guided by computer and GPS to deliver a shot of fertilizer in the
precise quantity to the exact spot at the time required. It’s fine to support the farmer’s market, but
those who endorse moving as much of the system as possible to a local paradigm
are trying to turn a personal preference into a requirement that would be a burden
on others who are either not so interested or not so well off.
As mentioned last time, sometimes doing the right thing
flies in the face of doing what feels like the right thing. It takes courage to change your own mind and
additional courage to challenge the fanatics who refuse to consider new
arguments or facts.
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