"#fn35" rel="footnote">35</a></sup>), super cheap. If surgical masks, more expensive but still pretty cheap.</p>

	<p>Benefit: Even if it&#39;s a 50‚Äì50 chance of surgical masks reducing transmission by 0% or 70%, the average &quot;expected value&quot; is still 35%, same as a half-lockdown! So let&#39;s guess-timate that surgical masks reduce R by up to 35%, discounted for our uncertainty. (Again, you can challenge our assumptions by turning the sliders up/down)</p>

	<div class="sim">
	        <iframe