Hillis concluded that no single source of timing could meet the requirements, so in a compromise the clock will use an unreliable but accurate timer to adjust an inaccurate but reliable timer, creating a phase-locked loop.
No single source of timing could meet the requirements. Hillis concluded this. The clock will use an unreliable but accurate timer. This is in a compromise. This is to adjust an inaccurate but reliable timer. The clock was creating a phase-locked loop. This was in a compromise.