I tend to interpret this as indicating that the funding pool is too small. Most of the observation time of how the body responds to microgravity necessarily hap

I tend to interpret this as indicating that the funding pool is too small. Most of the observation time of how the body responds to microgravity necessarily happens on space stations. The engineering challenges of human space travel are also a driver of technology. There is also an important diplomatic component to the ISS and the powerful symbolism of the nations of the world collectively building and maintaining something peaceful and truly awesome.