Overview
Curie is a community witness and a meritocratic community curation project. Following are Curie’s main goals:

To discover and reward undiscovered but exceptional content by persistent creators with limited success.
To empower quality curators.
To develop a curation community on Steem.
To build communities.
To serve as a community witness.
All of this with an absolute commitment to meritocracy and transparency with an aspiration towards zero corruption.

The primary challenge of operating an open curation guild is obvious -- people are going to overwhelm submissions with thousands of low quality posts. The Curie system is thus designed around principles of quality, while at the same time remaining decentralized and transparent.

Curie has two tiers of curation and quality assurance -- Curators and Reviewers. Curators find posts, reviewers verify and vote on the posts. Curators receive a Curation Score. Curators with a high Curation Score can submit more posts, while curators with low Curation Scores are restricted or disqualified from curation. This ensures only quality content is submitted to Curie, leading to a great degree of efficiency and streamlining of curation operations.

Curators with sustained high curation scores over six months are promoted to being Reviewers, as per demand. Through excellent quality curation, anyone can be a top curator, and anyone can be a reviewer. All thresholds are predetermined, so there’s a great degree of objectivity and meritocracy.
https://steemit.com/curation/@curie/curie-whitepaper