First Principles Breakdown Prompt

Help me rethink this from scratch: [problem]. Set aside how it's normally done, industry convention, and my own assumptions entirely. Strip it down to the fundamental truths involved — the real inputs, dependencies, variables, and hard constraints — then build a solution back up from those basics, as if no existing approach had ever been tried. Then put your first-principles answer side by side with the conventional approach and walk me through where each one wins, where it falls short, and how realistic it actually is to pull off.