div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentsurplus-value-and-mental-teaching-and-learning-the-art-of-stone-age-toolmakinghtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: Surplus Value and mental · Teaching and learning the art of Stone Age toolmaking may in fact have posed a formidable enough challenge to our ancestors that it spurred the evolution loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsinreader034viewer202205191460052b2a6d26b81f392fa934html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentsurplus-value-and-mental-teaching-and-learning-the-art-of-stone-age-toolmakinghtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: Surplus Value and mental · Teaching and learning the art of Stone Age toolmaking may in fact have posed a formidable enough challenge to our ancestors that it spurred the evolution loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsinreader034viewer202205191460052b2a6d26b81f392fa934html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentsurplus-value-and-mental-teaching-and-learning-the-art-of-stone-age-toolmakinghtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: Surplus Value and mental · Teaching and learning the art of Stone Age toolmaking may in fact have posed a formidable enough challenge to our ancestors that it spurred the evolution loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...