I asked @aprilblacksims to help me figure out what basic skills in The Sims 2 actually do. Let's analyze all of them!
♦ BEFORE YOU ASK ME ABOUT MODS OR CC, go here →   / mertikora  
Get early access to videos and other perks →    / marticore  

Physiology fix → https://modthesims.info/d/538689/
Sim Manipulator → https://simmanipulator.forumotion.com...

Sources:
https://sims.fandom.com/wiki/Skill
http://cyjon.net/node/272
http://cyjon.net/node/270
  / the_headmaster_scenario_mythbuster_i_hope  
...plus calculations, SimPE digging and ingame testing.

0:00 Intro
0:41 Cooking
2:55 Mechanical
5:43 Charisma
7:15 Body
8:14 Logic
9:01 Creativity
10:11 Cleaning
11:00 Conclusion

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⚪Twitter:   / themarticore  
Polish channel:    / @mertaodsimsow