What constitutes "early twenties" etc.?

[K888]

yeah I felt someone would say that

but like, for example, when you round money, it's like...
1/2c rounds down to 0c
3/4/5/6/7c rounds to 5c
8/9c rounds up to 10c

so like, if something was 21c you'd pay 20c cash, if something was 23c or 27c you'd pay 25c

I have weird ways of thinking though

Good point.
But, when it comes to age, you don't round up or down You don't say "oh I'm 25" if you're actually 23 haha

I just kinda feel like, when I'm 23, I won't feel like I belong in the mid-twenties - I won't feel old, wise, or responsible enough, nor will I have my life together enough to constitute being in the mid-twenties

[strawberries]

Good point.
But, when it comes to age, you don't round up or down You don't say "oh I'm 25" if you're actually 23 haha

I just kinda feel like, when I'm 23, I won't feel like I belong in the mid-twenties - I won't feel old, wise, or responsible enough, nor will I have my life together enough to constitute being in the mid-twenties

true.
I just feel like early-mid and mid-late are like too much words

[GalacticProcess]

Why would a 3-4-3 split not be most logical for the twenties?

I completely agree with J41 in this one. If a 2-3-2 split can be used for the teens, why can't the 20's follow a 3-4-3 split. To me, when you're 20-22 years old, you're in your early twenties, when you are from 23-26 years old, you're in your mid-twenties and when you are 27-29 years old, you're in your late twenties. It's seems like the most logical split for the twenties, does it not?

[howey]

I completely agree with J41 in this one. If a 2-3-2 split can be used for the teens, why can't the 20's follow a 3-4-3 split. To me, when you're 20-22 years old, you're in your early twenties, when you are from 23-26 years old, you're in your mid-twenties and when you are 27-29 years old, you're in your late twenties. It's seems like the most logical split for the twenties, does it not?

I agree with J41 too. It seems the most logical to me - a 3-4-3 split. And a five-tiered system is just too much.

[Joseph41]

Bump. Discuss.

[Bri MT]

Bump. Discuss.

Another crisis from J41?


The clearly superior classification has already been found

Early: 20,21,22
Mid: 23,24,25,26
Late: 27,28,29

As someone who will be turning 20 this year it's strange to think that the last "big" birthday I have is in the middle of the early 20s. It'd be nice to push that back to 25 so events are more spaced out.

[PhoenixxFire]

23 is not mid 20's, you can't change my mind.

20-23: early 20's
24-26: mid 20's
27-29: late 20's

0 doesn't count towards your system because a zero is zero. so each group has three ages in it. #IPassedMath

Either way, you're getting old :p *cries in almost 19*

[Erutepa]

The clearly supinferior classification has already been found

Early: 20,21,22
Mid: 23,24,25,26
Late: 27,28,29

As an expert in counting I propose a small revision to your model:

optional super early 20's

19

Early: 20, 21, 22, 23
Mid: 24, 25, 26
Late: 27, 28, 29, 30

optional super late 20's

30

Thankyou and goodnight.

[Joseph41]

Another crisis from J41?

In those words?

Yes.

[AlphaZero]

Alright. All the definitions I've seen in this thread are terrible. To make this rigorous, you cannot define early-, mid-, and late- as a function of age unless you want to form unequal partitions. I propose the following construction.
Definition 1:  The discrete age of a human \(H\) is equal to the floor mod of the time, \(T\), in years, since their birth. That is  \(\text{age}(H)=\left\lfloor T\right\rfloor\). (This is here only to clarify what I mean by age).


Definition 2:  We say that a human \(H\) is in their twenties if and only if  \[20\leq T<30\quad \big(\!\iff 20\leq\text{age}(H)\leq 29\big).\]

Definition 3:  The twenties can be broken into three equal partitions  \(t_1\),  \(t_2\),  and  \(t_3\), which we name early-, mid-, and  late- respectively such that \[t_1=[20,\,70/3),\quad t_2=[70/3,\,80/3),\quad t_3=[80/3,\,30).\]I'm sorry, I had to go full maths nerd on this

[PhoenixxFire]

^Thought I’d clicked on the wrong thread for a moment.

[Joseph41]

Alright. All the definitions I've seen in this thread are terrible. To make this rigorous, you cannot define early-, mid-, and late- as a function of age unless you want to form unequal partitions. I propose the following construction.
Definition 1:  The discrete age of a human \(H\) is equal to the floor mod of the time, \(T\), in years, since their birth. That is  \(\text{age}(H)=\left\lfloor T\right\rfloor\). (This is here only to clarify what I mean by age).


Definition 2:  We say that a human \(H\) is in their twenties if and only if  \[20\leq T<30\quad \big(\!\iff 20\leq\text{age}(H)\leq 29\big).\]

Definition 3:  The twenties can be broken into three equal partitions  \(t_1\),  \(t_2\),  and  \(t_3\), which we name early-, mid-, and  late- respectively such that \[t_1=[20,\,70/3),\quad t_2=[70/3,\,80/3),\quad t_3=[80/3,\,30).\]I'm sorry, I had to go full maths nerd on this

So... was I correct? Haha.

[AngelWings]

So... was I correct? Haha.

Not quite. He’s basically said that he wants to have it so that the 20s are divided into three equal parts.  So, early twenties becomes anyone from 20 years to 23 years and 4 months (not including the day they’re exactly 23 years and 4 months). Mid twenties becomes 23 years and 4 months to 26 years and 8 months (again, not including the day they’re exactly 26 years and 8 months). Late twenties is anyone from 26 years and 8 months up until they turn 30.

I think you were proposing for 20-22 year olds to be early twenties, 23-26 year olds to be mid twenties and 27-29 year olds to be late twenties.

[Joseph41]

Not quite. He’s basically said that he wants to have it so that the 20s are divided into three equal parts.  So, early twenties becomes anyone from 20 years to 23 years and 4 months (not including the day they’re exactly 23 years and 4 months). Mid twenties becomes 23 years and 4 months to 26 years and 8 months (again, not including the day they’re exactly 26 years and 8 months). Late twenties is anyone from 26 years and 8 months up until they turn 30.

I think you were proposing for 20-22 year olds to be early twenties, 23-26 year olds to be mid twenties and 27-29 year olds to be late twenties.

Thank you for de-mathsing the maths.