More than half of American adults want to transition to a single-payer healthcare system, according to a Washington Post-Kaiser Family Foundation poll conducted earlier this year. Most of these people have no idea how challenging such a switch would be — or the trade-offs it would entail.

Even the pied piper of single-payer, Sen. Bernie Sanders, I-Vt., recently admitted “there will be pain” in the process of implementing his proposed “Medicare for all” plan.