Superabundance Calculator

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<blockquote class="wp-embedded-content" data-secret="nrl7hfab1c"><a href="https://humanprogress.org/projects/superabundance-calculator/">Superabundance Calculator</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://humanprogress.org/projects/superabundance-calculator/embed/#?secret=nrl7hfab1c" width="600" height="400" title="&#8220;Superabundance Calculator&#8221; &#8212; Human Progress" data-secret="nrl7hfab1c" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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