Need C&C for some ideas

[Ytterbium]

I have a couple ideas that I'd like to know some people's opinions of...

My game takes place in the future, so therefore computer programs take place in virtual reality. There is once sequence where the player IMs another character in AIM (I called it NAIM to avoid copyright issues). Since it's in virtual reality, there isn't a white screen but rather the player's avatar speaks to the other character's avatar. I decided to keep the AIM atmosphere and play the appropriate dinging sounds that are sent before each IM while the two characters say their lines. Do you like this idea, or not?

Also, I have an idea for a puzzle. There are multiple solutions to each puzzle, and there are 7 different paths you can go down. The ending of the game depends on how you solve each puzzle. There is one path where you must solve each puzzle in the most difficult possible way. One puzzle can be solved by figuring out what year the game takes place in (I don't tell the player that it's 2019). There is a hint that you can use Moore's Law (Computer technology doubles every 18 months). The player character's computer has a 3.2 THz (terahertz) processor, top of the line at the time. So, the player can use Moore's Law by taking 3.2 THz and the current top of the line CPU speed (right now it's 3.2 GHz, but it will still work no matter what) and making some calculations (3200 GHz / 2 until you get about the current top of the line speed, multiply 18 times the number of times you divided to get the current speed, divide that by 12 and add it to the current year to get 2019) to get the answer. Of course, if they can't figure that out, they can do it another way, but this way brings them closer to seeing the hard ending.

Whatcha think?

[Proskrito]

mmm for the second:
Couldnt the player character just ask someone what year is it?
Would the player must know that moore law, or he could get that law inside the game, by reading a book or asking or so?
if the player could get the law inside the game, i think its ok, if not, its not very logical, imo.

EDIT: ah, i didnt see that there were a hint to use the moore law. That way people could at least search it on the internet or so. That changes everything ; )

[Ytterbium]

I understand what you mean, but that's why I will include six other solutions to the puzzle.