Cut my resume from two pages to one and started getting twice the callbacks. Here's exactly what went

Nothing groundbreaking, just things I was too attached to. Gone: the objective statement, three internships condensed into one line each, a "technical skills" section that listed every language I'd typed once, and a project from first year that had nothing to do with the roles I'm applying for now. Kept: the two projects I can talk about for twenty minutes, actual metrics where I had them, and one line per bullet instead of three. Sent the trimmed version to the same 40 companies I'd already been quietly rejected by under the old one and got four callbacks in a week. Might be coincidence, might not be.