there are a few thing that come from the Tralfamadorian world that may baffle some people. Hopefully, this may clear some things up. But I do give caution: it may confuse a lot of people!
THE DAY/NIGHT CYCLE
On page 133, Billy states that the Tralfamadorian world has 1 hour of night time to 62 hours of daylight. The common question: HOW?
Well, there are many solar systems which have two starts instead of one star in the center. These are called binary star systems. If Tralfamadore revolved around only one of the stars in the binary star system, the planet rotation speed and year cycle can be set in a way that could follow that day/night pattern. Just think of it like there are two suns in the sky. Here's a diagram showing the visual representation:
THE WHOLE 4TH DIMENSION CONCEPT
So, to put things into perspective, imagine a die and a piece of paper. The cuber has 3 dimensions to itself--an x, y, and z. the paper only has two--an x and a y. Imagine that we can only see everything on the 2-D world. If we place the dice, a 3-D object, on to the 2-D piece of paper, we are able to see the dice. However, we cannot see ALL of the die.
So, the Tralfamadorians are able to see in the 4-D world. It would probably mean that they exist in 4-D. What Billy is able to see of them is only a small part of the Tralfamadorians, just like we're only able to see a small part of the die on the piece of paper.
Now, image that there are multiple pieces of paper. The multiple pieces can intersect the die, each viewing a different portion of the die. The paper could be on one side, close to the middle, or on the end of it.
These pieces of paper represent time. We can only see what exists of the die in that particular position of the piece of paper--no other sides to it. To the Tralfamadorians, they can see all of the die, not just that piece of paper we are limited to seeing.
THE CONCEPT OF FREE WILL
I personally side with the Tralfamadorians with the concept of no free will. Let's say I'm given two options: I can either stab you in the hand with a pencil or give you five dollars. It's my choice to do either--the future of how you react to me would be different--you'd either be angry or happy.
If I make the initial choice of "give you 5 bucks," your future response will be happy. The future would be set, so the tralfamadorians would foresee you being happy. The future of you being angry isn't going to happen, so the option of me stabbing you with a pencil wouldn't happen. Because the future is pre-determined (by the process of elimination), there ISn't another option.
It's only human perception that we have free will. We cannot see the future. We cannot see what happens with option A, B, C, etc.. We can only see what options we have, and postulate what the future can be. We can only perceive that our decision making is changing the future--even though the future is already determined because we already made that decision.
Hope that this cleared some questions, although the side effects may include more questions! lololol