[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

View post   
File: 69 KB, 1400x855, C__Data_Users_DefApps_Windows Phone_AppData_INTERNETEXPLORER_Temp_Saved Images_1583228952221.jpg [View same] [iqdb] [saucenao] [google]
11436608 No.11436608 [Reply] [Original]

Why did the itching sensation evolve in humans if scratching yourself is bad sometimes?

Shouldn't our bodies have evolved to not reward scratching instead?

>> No.11436613

>>11436608
Tip: not everything has an evolutionary purpose. You can delete your thread now.

>> No.11436629

>>11436613
How did the itching sensation arise if not from targeted evolution

>> No.11436630

>>11436629
Through chance.

>> No.11436651

>>11436629
Sure why not
But my thread is still a good thread.

>> No.11436670

it is good, it's only bad when you break the skin

>> No.11436690

Ahh so you however say it evolved not from Chance >>11436670

>> No.11436703

Your girlfriend does not exist.

>> No.11436711

>>11436608
Because sometimes you scratch off dangerous bugs that can kill you, while getting sore skin doesn't kill you.

Headaches however are completely pointless and shouldn't even exist.

>> No.11436914

>>11436629
Because most of the time it's good. When we get itchy we are scraping dead skin off our body. it's an issue of hygiene. The vast majority of the time it is beneficial.

>> No.11436915

>>11436703
False

>> No.11436942

>>11436915
Thanks for confirming it is you. Now I know what to do about this thread.

>> No.11436954

>>11436670
Sometimes, I scratch an itch so hard, I rip the skin.

>> No.11436958

Pay closer attention to what I say? >>11436942

>> No.11437485

>>11436608
Maybe scratching from itching was learned, and is noway genetically programmed.

>> No.11437712
File: 1.35 MB, 1024x768, h6.png [View same] [iqdb] [saucenao] [google]
11437712

welcome to HELL