Wednesday, August 21, 2019

Arsenic and old lace

My people are showing up in many places, far away from Silicon Valley.  Of course I am referring to people from India.

Today, it is another. Niranjana Krishnan, who has authored this Aeon essay.

Krishnan has a good argument there: How afraid should we be of the synthetic chemicals that permeate our world?

At one end, we might have people who reflexively are opposed to any synthetic chemical.  At the other end, there are those who are ready to embrace and ingest anything that is unnatural.

Most of us occupy the vast space in between these two ends.  How do we respond to synthetic chemicals, and how should we?

Consider water.  Natural, right?  But, As they say in my part of the old country, "அளவுக்கு மிஞ்சினால் அமிர்தமும் நஞ்சு" (the idea translates to "even the divine nectar can become a poison if one exceeds the limit.)  Even water can become toxic, which is what happened a few years ago to a contestant:
On January 12, 2007, KDND's morning show, the Morning Rave, held an on-air contest entitled Hold Your Wee for a Wii, in which contestants were asked to drink as much water as they could without urinating. The contestant able to hold the most water would win a Wii video game console; at the time, the Nintendo console was a very popular and sought-after item, but was nearly impossible to find in stores in North America. A 28-year-old contestant, Jennifer Strange, died of water intoxication hours after taking part in the contest.
Krishnan refers to "the adage ‘the dose makes the poison’."  An example  that she gives is this:
Take the example of botulinum, the most poisonous substance on Earth. Just 50 grammes of the toxin spread evenly worldwide would kill everyone. But, in very minute amounts, it is safely used for cosmetic purposes in Botox.
Eliminate Botox and the entire entertainment industry collapses!

When it comes to something new, something synthetic, one could always ban it out of an uber-precautionary principle.  But, that does not account for a fundamental fact of life--"risk exists in nearly everything."  Recall that old joke about a mother writing to her son that she and her husband moved residences because they read that most accidents happened near one's home?  Risk surrounds us everywhere.
We therefore need to understand probability: is the chemical exposure high enough for a high probability of adverse effects? We also need to know the risks of using an alternative chemical – or no chemical at all.
It is this risk and probability that tRump does not understand when he talks about most issues, especially when it comes to wind turbines. 

Or consider arsenic.  A natural chemical, right?  Not synthetic.  May I give you a glass of water spiked with only a dash of arsenic? ;)
Ultimately, though risk and uncertainty exist on all sides, people seem to be averse only to certain kinds of risks. And while we should undoubtedly work to reduce harmful chemical exposure and come up with safer alternatives, we also need to realise that our excessive phobia of chemicals, particularly synthetic ones, can often be unwarranted. 
Which is why we have the EPA and the FDA.  My worry is that the tRump administration has been rapidly gutting these agencies, and practically forcing the scientists out.  While we won't return to the bad old days of large-scale arsenic poisoning, the worry is real that synthetic chemicals might be allowed at doses that will be harmful.  This is a real risk that we should all worry about.

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