Particle_Man
Explorer
1) price
2) Availability. I can get a pdf quicker than the hardcopy (sometimes the hardcopy won't be in my country for a while). And some hardcopies just can't be got, or not at any reasonable price.
3) If there is errata, a nice company will send a pdf patch or update to reflect this. As opposed to me scribbling into my hardcopy.
That said, I like hardcopies too, but then I don't own a laptop. Also, I think books are still easier on my eyes than computer screens.
2) Availability. I can get a pdf quicker than the hardcopy (sometimes the hardcopy won't be in my country for a while). And some hardcopies just can't be got, or not at any reasonable price.
3) If there is errata, a nice company will send a pdf patch or update to reflect this. As opposed to me scribbling into my hardcopy.
That said, I like hardcopies too, but then I don't own a laptop. Also, I think books are still easier on my eyes than computer screens.