deletions | additions       diff --git a/section_Science_Themes_The_20th__.tex b/section_Science_Themes_The_20th__.tex  index dc69b5c..6000c3b 100644  --- a/section_Science_Themes_The_20th__.tex  +++ b/section_Science_Themes_The_20th__.tex 
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The importance of the invisible: A great advancement has been achieved in recent years in stellar observations (e.g, ZDI maps of the stellar magnetic field). However, these observation are still limited by a rather low-resolution. This session will discuss the implications and limitations of these observations to provide a physical insight of stellar systems. For example, we will discuss how crucial is the small scale magnetic field and the details about the stellar wind in defining the evolution of the stellar parameters. [suggested by Ofer Cohen]  \subsubsection{Modeling stellar spectra in the era of massive surveys.} The measurement of stellar parameters from spectra underpins much of our knowledge in topics ranging from the build up of the Milky Way to the mixing processes in the outer regions of stars. This field is undergoing rapid changes thanks both to a rapid growth in observational datasets (APOGEE, GALAH, Gaia-ESO, etc) and an explosion of new tools for analyzing such large and rich datasets. This session will bring together communities working on detailed (3D, NLTE) spectroscopic models, classic 1D models and data-driven models (e.g., the Cannon) and will explore the advantages and limitations of these techniques in the context of modern spectroscopic surveys.  [suggested by Charlie Conroy]  \subsubsection{Your suggested science theme here}  \subsection{This is from the CS19 proposal as a guide to what we could write here:}