Reason behind using D2 and D3 pins

[pyciko]

In the readme example, you're using D2 and D3 pins to communicate with HX711.
D2 and D3 pins are the only interrupt pins on Nano, so my question: is there any special reason you're using them in example sketch, or it's just a random choice and it's safe to use other non-interrupt pins?

[bogde]

it's safe to use other pins