# Sign地缘政治基建

Yesterday, an elder came to my house and asked me to help him with his phone, saying it was extremely slow.
When I opened it, I was stunned—the screen was densely packed with various apps: social security, medical insurance, housing fund, utilities, tax, bank... Dozens of them stacked together, almost bursting the memory.
What’s more heartbreaking is that he had notes tucked behind his phone case, with all his account numbers and passwords written on them.
I felt both angry and amused, but the elder was very serious: "I’m old and can’t remember things. If I don’t write them down, I can’t