GreyFox,
I have found a small bug in the program, i am using version 1.5.
It seems the turns left to research rounds down, according to what i see it should round up. I shall cite a few examples:
Game one: Science at 7 per turn, Emperor, Standard Map
Cost of Masonry = 120 (no other civs with that tech)
Base turns to research = 120/7 = 17.1
Tech Calc shows turns left = 17
PTW 1.21 shows turns left = 18
Cost of Mystacism = 120 (no other civs with that tech)
Base turns to research = 120/7 = 17.1
Tech Calc shows turns left = 17
PTW 1.21 shows turns left = 18
Cost of Wherl = 120 (2 civs with that tech)
Base turns to research = n/a, since 2 other civs have the tech
Tech Calc shows turns left = 14
PTW 1.21 shows turns left = 15
Game two: Science at 23 per turn, Monarch, Huge Map
Cost of CodeOfLaws = 444 (no other civs with that tech)
Base turns to research = 444/23 = 19.3
Tech Calc shows turns left = 19
PTW 1.21 shows turns left = 20
Cost of Literature = 444 (no other civs with that tech)
Base turns to research = 444/23 = 19.3
Tech Calc shows turns left = 19
PTW 1.21 shows turns left = 20
Cost of Polyethism = 533 (no other civs with that tech)
Base turns to research = 533/23 = 23.2
Tech Calc shows turns left = 23
PTW 1.21 shows turns left = 24
It does give the right number if the basic tech cost divides evenly by the number of gold you are putting into scince though.
Never really used the utility later on in the game ie past the middle ages, but it looks pretty good otherwise..very handy for finding out who has what in a PBEM.
digger760