I do realise that this is an enormous problem in science today (string theory included), but after reading some related material, i have a question i'd like you guys, if possible, to answer... There are two problems with the cc: Why is it so small and why is the cc the same order of magnitude as other components of the cosmic energy density today? how did it came to be the non-zero value we see today (cosmic coincedence)? why is it zero at the minimum potential? Could it be that dynamics favors small cc? even if it isn't a minimum of the potential? That is, could the universe stall at or near cc=0 (minimum potential at cc=0?) and start evolving from there? when u get to zero curvature, the scalar field will seize evolving... Clearly, that would require some unconventional dynamics, but perhaps that is what cc is telling us... Perchance, a scalar field controls the dynamics (assuming Vmin<0, minimum is at negative energy: somehow the potential could drift from negative to positive, otherwise the idea would be obsolete). Let's assume inflation has occured; presumably, large initial CC... the key to this model is NOT special potential, but special form for kinetic term (it could always absorb the cc) and the value of this potential controls the vacuum energy. Why do u think guys?