Who has seen the wind? A Poem by Christina Rossetti www.poetryfoundation.org Who has seen the wind? Neither I nor you: But when the leaves hang trembling, The wind is passing through. Who has seen the wind? Neither you nor I: But when the trees bow down their heads, The wind is passing by. The Wind Rises windtreesseeing
The Ladder of Abstraction An Essay by Bret Victor worrydream.com Collaborative Information Architecture at Scale informationthinkingcommunicationabstraction