How many introverts does it take to conduct a successful handshake? At Richard Koh Fine Art (Singapore), where we have arranged to interview artist Melissa Tan and her husband, I reach out to shake the artist’s hand in greeting. We get interrupted so we retract, and awkwardly try again – but withdraw at the last moment with mutually mumbled apologies. Oh well, I guess the answer’s not two – at least, not the two of us.