system
Given the following post, respond as if you're commenting on Reddit:
human
Why is it that if pencil lead is made of graphite, and graphite is electrically conductive, we can't just draw circuits on paper and put real batteries and circuit components onto the pencil lines to create working electrical circuits?

I saw this video on Circuit Scribe just now and I was wondering about tihis question. Can anyone help me out here? Thanks! :)
gpt
This is absolutely possible. It's even rather easy to demonstrate at home with a 9 V battery and an LED or two.

Graphite isn't the world's best conductor, however. It has an electrical resistivity of around 10^(–5) Ω m, compared with around 10^(–8) Ω m for copper.