Meeting notice: 09-15-98; 7:30 pm. Re: Meeting Place. I have not been able to drop by NE-43 to see if the rehab is finished. Perhaps we should meet there but be prepared to decamp to the Royal East (782 Main St. Cambridge; a block down from Mass Ave., if need be). Suggested topic: The effect on NT of changes in transportation costs. Sudden changes in transportation costs can have drastic effects on a society. For all the changes we have seen, by and large our age has escaped this particular destabilizer, the oil embargo of the early 70's aside. (We see ourselves as being affected more by changes in cost of communications.) Nonetheless, there may well be a collapse in transportation costs over the next few decades as technologies like VTOL, autonomous navigation, better materials, and new designs remake the face of aviation. VTOL will free the industry from the charges, taxes, and logistical inefficiencies of airports. Autonomous navigation will lower the skill barrier and make possible a suite of much smaller vehicles, with all the favorable cost implications implied by small sizes. New materials, such as fullerene and diamond fiberglasses, will lower the cost of maintenance dramatically. All these trends, combined with new designs (such as large dirigibles), will accelerate the penetration of aviation into sectors that now make do with surface transit. I use the term 'accelerate' because the more traffic that is moving through the air, the smaller the user base left to shoulder the costs of maintaining surface highways (one of the nice things about flight is that highway maintenance costs tend to be pretty low); as these costs grow even more transport functions will take to the air, etc. I would not be surprised if the world's stock of usable surface highways were to shrink steadily during the second half of the 21st century, until the only highways left were to be found in recreational theme parks and regions patrolled by fundamentalist historical societies. NT is preeminently a system of local manufacture and to some extent 'competes' with transportation. It appears to follow that low transportation costs might retard the development of NT; on the other hand, it is not obvious that NT wouldn't benefit from a system in which it was economical for a single manufacturing center to supply the world's needs for a given category of product. So what are the pros and cons? Also: I have just returned from a a competitive event organized around a hobby called 'Remote Controlled Big Gun Warships'. This is an avocation in which members pour hundreds of man-hours into building historically accurate representations of warships laid down in the first half of the 20th century. When their models are complete and functional (down to working guns) they repair to a nearby lake and try to put each other under the water. A nice design gets the accolade 'Pretty enough to shoot at.' If there is time and interest I will tell some war stories. Announcement Archive: http://world.std.com/~fhapgood/nsgpage.html. hapgood@pobox.com