to scroll - to move information on a screen to see a different part of it, greyscale - black and white and the shades in between, vulnerable - easily damaged or harmed; at risk, to drop by - to visit informally for a short time, to exacerbate - to make something worse, a rush - a chemical reaction in your brain that makes things feel good, baby boomers - the generation currently in their late adulthood, to class - to categorise; to name,

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