  In the first part I discuss the sensitivity of collective matter expansion in
ultrarelativistic heavy-ion collisions to the transition between quark and
hadronic matter (physics of the softest point of the Equation of State). A kink
in the centrality dependence of elliptic flow has been suggested as a signature
for the phase transition in hot QCD matter. Indeed, preliminary data of NA49
presented at this conference show first indications for the predicted kink. In
the second part I have a look at the present theories of heavy-ion reactions.
These remarks may also be seen as a critical comment to B. Mueller's summary
talk (nucl-th/9906029) presented at this conference.
