Resumen
This document describes the scientific case for a wide-field 6.5-m spectroscopic telescope. The key scientific aims are linked to two different modes of operation: 1) Study the detailed astrophysics of extended systems via high-quality, medium-resolution spectroscopy using multiple Integral Field Units (IFU) and 2) Study the structure of the Universe via multiple, single-fiber spectroscopy of distant and/or compact systems. This wide-field spectroscopic facility will complement and extend present facilities, greatly enhancing the potential for new discoveries while at the same time minimizing the chances of scientific failure. Strategically we aim to address the widest possible range of astrophysically competitive areas while minimizing the number of instruments.
