@katiecannon2 this generation of kids caught between both pressures … we underinvest in them as infants and burn th… https://t.co/kjAOdvhKvG
Before envelopes, sensitive message were “letter locked” by clever folding and wax sealing. Fascinating! economist.com/science-and-te… https://t.co/EoLt4x64zY
Before envelopes, sensitive message were “letter locked” by clever folding and wax sealing. Fascinating! economist.com/science-and-te… https://t.co/EoLt4x64zY