If you're not asking about anything that we currently don't have a word for, we can use words as the alphabet, sure.
We then need to transmit a list of words, they're allowed to use, otherwise our count is off, because I'm sure that 974 years from now english won't be the same, as it is today. They'll have a lot more skibid rizz than we do now.
Once you're able to use time as an information, they can send a message with a character limit. For every letter they need to wait:
Remaining Message Length^Alphabet Size*Index of Letter*time interval
So, if future people want to sent the message hello and our time unit is 1s, and the max message length is 5, they need to send the bit to exactly
26^4*7+26^3*4+26^2*11+26^1*11+26^0*14 = 3276872 seconds or 54614,5333min or 910,242222h or ~38 days after the start time.
We can choose smaller time intervals, but with a long enough message, we'll eventually reach the year 3000 again. Alternatively, we can move the start time into the past, at the expense of quite a few possible messages.
This is the same problem as trying to map an n-dimensional array to a one dimensional array
That being said, I, too, started avoiding Burger King, when their allergy information sheet contained all three versions of this disclaimer. ("May contain", "May contain traces of" and "May be cross contained with")
The ethics of posting someone's diary entry aside:
It reads to me like he fell in love with someone once ("not just a rock, but a mountain"), she broke up with him and he felt like the new guy won't be able to love her as he does ("reduces herself to a rock in someone else's collection of rocks").
And this pain is what makes him both be himself around potential love interests ("When I became indifferent to it, I found myself sharing many beds") and protect himself from being hurt agaim, by disassociating/erecting mental walls. ("I found myself performing, doing the right things"). The beginning about performance is just justifying the disassociation to himself as normal.
As to your question on how someone can be so happy alone?
People usually aren't, but if he's single and never opens ups to anyone, they can prevent being hurt, at the cost of never really finding the same type of love again.
And how do you get over him?
Well, like him (I assume), you were hurt. Unlike him, you didn't disassociate. Like him, you are stuck in the "What could I have done differently" ("If he makes a mistake [...] it’s over.") part of grieving.To get over him, accept the pain your brain is trying to process. Feel the hurt and let yourself grief the relationship, whenever you need to.
And, eventually, try looking for the parts you love in your boyfriend. Know, that while he interpreted his subconscious wanting to put some effort into a relationship as a performance, you boyfriend likely doesn't, but does it of his free will.
And delete, or at least lock away, the diary. There is no need to relive the pain, by reading the diary. In there isn't anything that will change the past, nothing that will help you with your boyfriend and you can't fix him, needs to accept and process his pain himself, too.
Just a word of advice:
If you get started on your journey to regaining your confidence, be aware it might take years. A Therapist will speed up the process through asking the right questions and 'judgement', but are relatively expensive (you're basically paying their hourly wage 1:1, plus taxes)
If you can't or don't want to afford a therapist, there are enough (good) resources on the internet to DIY this. Just keep in mind that this will take much longer and both approaches will require processing emotions and (good) crying :)
With that first and last paragraph, in addition to your question, it sounds like you don't have the confidence to decide this purchase on your own.
Whereas spending money on car stuff, emergency funds or your parents must have been generally approved by whoever you fear consequences from. (looks like your father (or parents?) when you were a child)
You can obv. just go ahead and buy that MacBook, as a form of exposure therapy. Buy it, accept the potential fallout from that action and come out the other side with a MacBook.
If even small luxuries, like a small figurine make you anxious, you could search for something small you like and buy that first and 'work your way up'.
Alternatively you need to do the deep soul searching and process all those emotions around spending and saving money. Which future does your fear try to save you from? What happens to you, or your family, when you spend that money? Why do you budget (emotionally)? Why is spending money on family (luxuries?) ok? When is it not? What does a MacBook represent to you?
If you're not asking about anything that we currently don't have a word for, we can use words as the alphabet, sure.
We then need to transmit a list of words, they're allowed to use, otherwise our count is off, because I'm sure that 974 years from now english won't be the same, as it is today. They'll have a lot more skibid rizz than we do now.