Software & Hardware

What distinguishes software from hardware is the fact that it's alive.

It changes over time unlike hardware that don't.

Then, what makes software alive? ( = easy to change?)

• Modularity (makes codes easy to fix)
• Careful documentation of specification (makes codes readable)
• Defensive programming (makes bugs easier to detect)

* small thought: These days, however, hardware is becoming alive(= easier to change) with modularization. See Google's Ara. Software's 'softness' is being injected into hardware.