4 pro 

The cream of the crop; the best of the best.

Dude 1: Dude, do you play Halo 3?
Dude 2: Yeah dude I'm 4 pro.
Dude 1: What do you mean 4 pro?
Dude 2: Dude I can't even play with the pros, they pay me not to play I'm so good.

4 pro by Savage J October 26, 2007

PlayStation 4 Pro 

Arguably the greatest game console of all-time. It even has a feature where you can shove your dick in the disc drive and it sucks you off, so you can divorce your wife.

My mom just hanged her self in front of me, but who cares? I own a PlayStation 4 Pro!

PlayStation 4 Pro by PS4 Pro is awesome June 27, 2018

dji mavic 4 pro

The big fancy flagship quadcopter from dji, expensive, powerful and definitely not for amateurs!

the dji mavic 4 pro is hella expensive. I certainly won’t be getting one anytime soon.

dji mavic 4 pro by Apple=Airbus, Samsung=Boeing November 18, 2025

3,4-MethyleneDioxyPhenyl-2-Propanol 

3,4-MethyleneDioxyPhenyl-2-Propanol (MDP2Pol) is a chemical with a boiling point of 125°C at 25mmHg. MDP2Pol is a yellowish oil which is an alcohol. It is formed from dilute phosphoric acid hydration of safrole (sulfuric acid isn't used because sulfuric acid is an oxidizing acid which rearranges MDP2Pol (3,4-MethyleneDioxyPhenyl-2-Propanol) to MDP1Pol (3,4-MethyleneDioxyPhenyl-1-Propanol). MDP2Pol is also formed by oxymercuration demercuration of safrole. MDP2Pol can be oxidized to MDP2P (3,4-MethyleneDioxyPhenyl-2-Propanone) by either sodium chlorite or sodium hypochlorite in hydrochloric acid and the byproduct is chlorine gas (wear a gas mask and do the reaction outside). It can also be oxidized by lead acetate. 3,4-MethyleneDioxyPhenyl-2-Propanol is also called Sesamyl-2-Propanol (Se2Pol, Ses2Pol, Sm2Pol), hydroxysafrole, and Sesamylisopropanol.

I formed 3,4-MethyleneDioxyPhenyl-2-Propanol by hydrating safrole with an aqueous dilute solution of phosphoric acid.

3,4-MethyleneDioxyPhenyl-2-Propanol by CognitiveFuel November 18, 2022

3,4-MethyleneDioxyPhenyl-2-Propanone

3,4-MethyleneDioxyPhenyl-2-Propanone (MDP2P) is a yellow chemical that has a melting point of 87-88 °C and a Boiling point range of 115-170 °C at around 30 mmhg. MDP2P can be synthesized by oxidation of MDP2Pol (3,4-MethyleneDioxyPhenyl-2-Propanol) using either sodium chlorite or sodium hypochlorite in hydrochloric acid and a byproduct is chlorine gas (if hydrochloric acid isn't used, then you will get the haloform reaction). MDP2P can also be synthesized by a grignard reaction of 3,4-MethyleneDioxyBenzyl magnesium chloride (formed from 3,4-Methylenedioxybenzyl chloride and magnesium turnings in diethyl ether) and acetonitrile followed by hydrochloric acid work-up. MDP2P can also be synthesized from wacker oxidation of safrole. Reaction of MDP2P with an ethanol solution of ethylamine and Aluminum Galinstan amalgam reduces the MDP2P-ethylimine intermediate into MDEA. 3,4-MethyleneDioxyPhenyl-2-Propanone is a yellow oily ketone. It is yellow green in the sunlight. MDP2P can also be synthesized by reacting sesamyl tosylate (SmOTs,3,4-Methylenedioxyphenyl tosylate) with ethyl acetoacetate and sodium ethoxide and Copper iodide catalyst and heat. 3,4-MethyleneDioxyPhenyl-2-Propanone is also called Sesamyl-2-Propanone (Se2P, Ses2P, Sm2P), Sesamylacetone, and Piperonyl Methyl Ketone.

I synthesized 3,4-MethyleneDioxyPhenyl-2-Propanone (MDP2P) by reacting 3,4-MethyleneDioxyBenzyl magnesium chloride and acetonitrile followed by hydrochloric acid work-up.

3,4-MethyleneDioxyPhenyl-2-Propanone by CognitiveFuel October 29, 2022

product 4 

Allegedly product 4 was a pill containing acid, speed, heroin and cocaine. I can elaborate in detail when I find out if my post is clearly me or posted with a pseudonym?

Product 4 was taken as a pill: allegedly a combination of acid, speed, heroin, and cocaine. As far as I know it hasn’t been in circulation since the early 1970s.

product 4 by TDADDY ROCKET February 16, 2023

The 4 Axes of the Progress Spectrum

An expanded model adding two crucial dimensions to the basic framework. Axis 1: Material-Moral (stuff vs. ethics). Axis 2: Individual-Collective (me vs. us). Axis 3: Linear-Cyclical (steady advancement vs. wave-like progress that comes and goes). Axis 4: Absolute-Relative (progress against fixed standards vs. progress compared to others). These four axes create sixteen progress-types. The 20th century saw dramatic material progress (absolute) that was unevenly distributed (relative failure), with moral progress that was real but cyclical (rights advanced, then backslid). The 4 Axes reveal that progress debates often talk past each other because they're on different axes entirely.

The 4 Axes of the Progress Spectrum "You say we're making progress because technology advances. I say we're not because inequality grows. The 4 Axes show: you're on material, absolute, linear. I'm on material, relative, also linear. Same axis family, different positions. We're both right—and both wrong about the whole picture."

The 4 Axes of the Progress Spectrum by Dumu The Void February 25, 2026