Editing Talk:2213: How Old
Please sign your posts with ~~~~ |
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.
The edit can be undone.
Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 11: | Line 11: | ||
[[User:JohnHawkinson|JohnHawkinson]] ([[User talk:JohnHawkinson|talk]]) 11:21, 9 October 2019 (UTC) | [[User:JohnHawkinson|JohnHawkinson]] ([[User talk:JohnHawkinson|talk]]) 11:21, 9 October 2019 (UTC) | ||
:You mean the base 10 logarithm or the ln? {{unsigned|172.68.65.252|23:13, 9 October 2019}} | :You mean the base 10 logarithm or the ln? {{unsigned|172.68.65.252|23:13, 9 October 2019}} | ||
β | ::Well, '.252, I think "natural logarithm" is pretty clear. It means ''ln''. In this case, I chose the natural log because human development is far more rapid around age 2.718281828 than it is around age 10. So a ''deciln()'' of 10 or 20 or 30 corresponds to an ''e''-year-old, a 7 year-old, or a 20-year-old. Whereas in base 10, it'd be a 10-year-old, a 100-year-old, or a 1000-year-old. That's a lot less useful. I also like the idea of a negative ''deciln()'' indicating a person who probably can't meaningfully speak. If the max human lifetime is 160 years, a ''deciln()'' gives a range from -58 to 51, which is a more helpful than base ten range of -25 to 22. Contrariwise, I agree that a range -100 to +100 has some appeal, which would suggest a base of 1.6611, but since that's not a common log base, I did not | + | ::Well, '.252, I think "natural logarithm" is pretty clear. It means ''ln''. In this case, I chose the natural log because human development is far more rapid around age 2.718281828 than it is around age 10. So a ''deciln()'' of 10 or 20 or 30 corresponds to an ''e''-year-old, a 7 year-old, or a 20-year-old. Whereas in base 10, it'd be a 10-year-old, a 100-year-old, or a 1000-year-old. That's a lot less useful. I also like the idea of a negative ''deciln()'' indicating a person who probably can't meaningfully speak. If the max human lifetime is 160 years, a ''deciln()'' gives a range from -58 to 51, which is a more helpful than base ten range of -25 to 22. Contrariwise, I agree that a range -100 to +100 has some appeal, which would suggest a base of 1.6611, but since that's not a common log base, I did not sugggest it. [[User:JohnHawkinson|JohnHawkinson]] ([[User talk:JohnHawkinson|talk]]) 23:57, 9 October 2019 (UTC) |
::: +1! I ''really'' like this idea! [[User:John.Adriaan|John.Adriaan]] ([[User talk:John.Adriaan|talk]]) 04:23, 10 October 2019 (UTC) | ::: +1! I ''really'' like this idea! [[User:John.Adriaan|John.Adriaan]] ([[User talk:John.Adriaan|talk]]) 04:23, 10 October 2019 (UTC) | ||
:::a deciln would be a tenth of a ln, not ten times. [[Special:Contributions/188.114.103.131|188.114.103.131]] | :::a deciln would be a tenth of a ln, not ten times. [[Special:Contributions/188.114.103.131|188.114.103.131]] |