  This is the written account of the second of two panel discussions, on
"Reconciling observations and modeling of star formation at high redshifts".
The chair of the panel was Pavel Kroupa, and panel members were Marc Balcells,
John Beckman, Christopher Conselice, and Joseph Silk. After a short
introduction by each of the panelists, panel and audience entered into a lively
discussion, centered around the following six themes: the mass function of
pre-stellar gas clouds; a possible top-heavy initial mass function at high
redshifts versus mini-quasars as the first sources of ionization; the
integrated galactic initial mass function; possible differences in specific
star formation rates in disks and in massive galaxies; whether merging rates
yield a wrong prediction for massive galaxies, and what is the physics behind
the onset of the red sequence of galaxies; and the case of dark
matter-dominated dwarf galaxies versus tidal dwarf galaxies.
