It is better to see 2001 before 2010. Then you should have known about HAL's multifunction & the mystery question in dark space.
The shinning point in 2010 is that HAL finished its great turning, from a murder suspect to a self sacrificer.
Reasonably, the special effect seems ordinary in this film. And having the series which were once shot by Stanley Kubrick, that should be a lot of pressure for any other director.