For the first time in nearly four months, crude oil has crossed back above $100 per barrel as the week draws to a close — a threshold that carries weight not merely as a number, but as a signal of collective human anxiety and confidence about energy's future. The price of oil is, in many ways, the price of modern civilization's momentum, touching everything from the grocery aisle to the decisions of central bankers. Whether this crossing marks a durable shift or a fleeting summit remains the question that markets, households, and policymakers will be watching in the weeks ahead.