I chose a software analogy and digital example because this is a software forum. Don't read too much into it.
In a different analogy, you could say that capacitance gives inertia to voltage and inductance gives inertia to current. The power loop acts as an inductor and antenna. It's susceptible to disturbances from the chip, the power supply, and interference. Analog chips are particularly susceptible to such disturbances.
In a different analogy, you could say that capacitance gives inertia to voltage and inductance gives inertia to current. The power loop acts as an inductor and antenna. It's susceptible to disturbances from the chip, the power supply, and interference. Analog chips are particularly susceptible to such disturbances.
It's possible sometimes to not use a cap.