Actually the systems which will allow to target the "heat exchanger" are not that easy to build and only recently we have seen big lasers mounted on planes which can barely hit a rocket. So it's not that easy
I never said it would be trivial. There are two big differences, though. 1) The laser-launch craft wants to be hit. We can mount retro-reflectors on it, and it can transmit back helpful data. 2) The laser is going to be stationary, and the vehicle is going to be traveling on a known track.
and anyway it will be weapon technology.
This makes it much more likely that it will get funded and developed.
I never said it would be trivial. There are two big differences, though. 1) The laser-launch craft wants to be hit. We can mount retro-reflectors on it, and it can transmit back helpful data. 2) The laser is going to be stationary, and the vehicle is going to be traveling on a known track.
and anyway it will be weapon technology.
This makes it much more likely that it will get funded and developed.