Given that the Governor has not left instructions for the use of a scientist, the use of the favored 80/20 slider rates should probably be used, though if population changes permit a more favorable rate, it may be changed, assuming that Philosophy research time is not lengthed.
Should Philosophy be finished, select Map Making as our next tech, pursuant to earlier polls on the subject. I request that, after Philosophy is done and we've recieved our reward (assuming it comes), that the turnchat be halted so we may examine further trading options.
Should we be met with a foreign demand at some point for either tech or gold, it will probably be in our best interest to give in to the demand. However, if the civilization making the demand is geographically located far away with no troops visible in our area, or if we are stronger militarily according to the in-game advisors by some miracle, seriously consider not giving in. These are the only guidelines I can lay out - the DP should consider these when making the decision.