A case of learned ignorance - why can't he trust his naked eyes?. Illustration shows Yale professor and university president Arthur T. Hadley looking through a huge magnifying glass trained on a laborer labeled Trust Employee; however, what Hadley sees through the lense is Trust slave linked by ball and chain to Trusts. On the ground, at Hadley's feet, is a piece of paper stating Dangers of trusts and imperialism. Prof. Hadley.. Date 1901 April 3. A case of learned ignorance - why can't he trust his naked eyes?. Illustration shows Yale professor and university president Arthur T. Hadley looking through a huge magnifying glass trained on a laborer labeled Trust Employee; however, what Hadley sees through the lense is Trust slave linked by ball and chain to Trusts. On the ground, at Hadley's feet, is a piece of paper stating Dangers of trusts and imperialism. Prof. Hadley.. Date 1901 April 3.