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In November 2012, during my first year as a PhD student, a 23-year-old medical student knocked on my door. Earlier that day, we had been discussing our ages in our shared kitchen. At 30, I had stayed silent, feeling a sharp sting of embarrassment next to my 20-something housemates.<\/p>\n
But this student was determined to get an answer from me. He shoved his passport in my face and demanded to see mine. When I admitted my age, he laughed and said: \u201cWow, you\u2019re so old.\u201d<\/p>\n
In that moment, I felt a deep sense of\u00a0shame and failure<\/a>. But after a decade of research tracking more than 100 young people, I want to tell my younger self: you weren\u2019t failing. You simply hadn\u2019t inherited the same amount of time as your peer.<\/p>\n My work<\/a>\u00a0with students in China shows that social inequality isn\u2019t just about money or status. It\u2019s also about time inheritance.<\/p>\n I started my PhD at 30 only after spending five years working to clear my family\u2019s debts and move my parents out of a house where sewage regularly flooded their floors. My housemate, whose father and grandfather were doctors and Cambridge alumni, had inherited\u00a0\u201cbanked time\u201d<\/a>\u00a0\u2013 a cushion of security that allowed him to glide straight to the academic starting line.<\/p>\n To make sense of this, I distinguish between two kinds of time inheritance.<\/p>\n Some young people receive banked time. They start life with a \u201cfull tank\u201d: parents who can afford to support them through unpaid internships, gap years, or an extra degree, and the freedom to change course or repeat a year without financial ruin. This creates a sense of temporal security that allows them to take measured risks, explore their interests, and wait for the best opportunities to arise. They have \u201cslack\u201d in the system that actually generates more time in the long run.<\/p>\n Others live on borrowed time. They start with an \u201cempty tank,\u201d already owing years of labour to their families before they even begin. Because their education often relies on the extreme sacrifices of parents or the missed opportunities of siblings, these students carry a heavy debt-paying mentality.<\/p>\nBanked time v borrowed time<\/strong><\/h4>\n