2. Why Do We Say “Bless You” After a Sneeze?
No one says “bless you” when you cough, hiccup, or choke — but sneeze once, and suddenly everyone’s involved.
This tradition goes back thousands of years.
One popular theory comes from the Black Plague. Sneezing was an early symptom, and people believed invoking a blessing might protect the sneezer from death.
An even older belief was that sneezing caused your soul to momentarily leave your body — and saying “bless you” helped prevent evil spirits from slipping in during that brief window.
Less supernatural but equally strange: the heart-stopping myth. People once believed sneezing briefly stopped the heart. (It doesn’t, but it can change heart rhythm slightly.)
So “bless you” became a verbal charm — a reflex passed down long after the fear disappeared.
Today, we say it not because we believe in demons or soul-loss, but because silence after a sneeze feels awkward.
Social habit outlived superstition.
3. Those Metal Bumps on Sidewalks
You’ve seen them — raised, bumpy metal or rubber tiles near crosswalks and train platforms.
They’re called tactile paving, and they exist for people with visual impairments.
Invented in Japan in the 1960s, these bumps help blind and low-vision pedestrians detect:
Where sidewalks end
Where streets begin
Where it’s safe (or unsafe) to walk
Different patterns mean different things:
Dots = warning
Lines = direction
What’s surprising isn’t that they exist — it’s how long it took for them to spread globally.
For decades, cities were designed almost exclusively for people who could see, hear, and move easily. These bumps are small proof that accessibility often arrives late, but once it does, it quietly reshapes public space.
4. The QWERTY Keyboard Isn’t Bad — It’s Old
People love to complain about QWERTY keyboards.
“They’re inefficient!”
“They slow us down!”
“They weren’t designed for modern typing!”
All true. But that’s because they were never meant for speed.
The QWERTY layout was designed in the 1870s for mechanical typewriters. Early machines jammed when commonly used letter pairs were pressed too quickly. So keys were deliberately spaced to slow typists down and separate frequent letter combinations.
The goal wasn’t efficiency — it was survivability.
Even though better layouts like Dvorak exist today, QWERTY stuck. Why?
Because:
Everyone already knew it
Businesses didn’t want retraining costs
Muscle memory is powerful
Standardization beats optimization
QWERTY is a fossil we type on every day — proof that once a system becomes dominant, it’s almost impossible to replace, even if it’s flawed.
5. The Hole in the Middle of Pen Caps
