Scientific evolution Memes

The evolution of lab safety standards is hilarious and terrifying. On the left, we have 1925's absolute unit of a chemist casually mouth-pipetting sulfuric acid (H₂SO₄) - you know, just a compound that can dissolve your esophagus faster than tenure committee rejections. Meanwhile, modern chemists have a complete meltdown over 0.00001M acetic acid (basically fancy vinegar) touching their glove. Safety protocols have evolved from "what doesn't kill you makes you stronger" to "I need therapy because a drop of something weaker than salad dressing touched my PPE." The methylene blue accident mentioned in the title? Classic chemist rite of passage - turns your urine Smurf-blue and convinces you death is imminent. Nothing says "I'm a real scientist now" like peeing blue and having an existential crisis!