<a href="https:&#x2F;&#x2F;www.schneier.com&#x2F;essays&#x2F;archives&#x2F;2006&#x2F;05&#x2F;the_eternal_value_of.html" rel="nofollow">https:&#x2F;&#x2F;www.schneier.com&#x2F;essays&#x2F;archives&#x2F;2006&#x2F;05&#x2F;the_eternal...</a><p>Here, read and understand.