Where did the PULS come from?

The Public Understanding of Law Survey is the first of its kind.

Is the PULS a new idea?
What is 'access to justice', 'legal need' and 'unmet legal need', and how do they relate?
What is a 'legal need survey' and what is a 'justiciable problem'?
What is legal capability and why are we interested in it?
How does the PULS explore legal capability?