8 greatest mistakes in history made by humans

What? In the 1990's, Excite was a top-notch company that was worth $150 million. The company was given the offer to buy Google twice, once for $750,000 and another time for $1 million. However, CEO George Bell turned down the offer on both occasions. We're sure he would have bought it in the blink of an eye if he could take a trip to the future.

Heinrich Schliemann, a German businessman and archaeologist, found different ruins during excavation near the site of Troy, but wasn’t sure which part of them exactly was once the legendary city. He assumed the ruins of Troy were farther and he could bring it closer to the surface using an explosive...

That was a terrible mistake, as it turned out that the city of Troy was much closer to the surface and he ended up blasting the city to ruins. Had he exercised a little more patience, perhaps we may have been able to explore much of the famous historical city today.

In a battle between the Ottoman army and the Austrian army, the Austrians killed 10,000 of their men. How’s that even possible, you might ask? The Austrian army split into two groups, one set went to scout the Ottoman's. They arrived, and instead of scouting the opposing army, they decided to drink and party.

When the second set of their crew arrived, they wanted to have some fun too, so a brawl began. Someone yelled "Turci" and both sides believed they were set up by the Ottoman's and they began to fighting and killing each other. It was an automatic victory for the Ottoman empire that arrived days later to see the dead bodies of their opponent.

The tower of Pisa is located in the Italian city of Pisa. It is famous for its leaning sight. The tower was completed in 177 years, but four days after it was completed, it started leaning!

While building the tower, somebody definitely didn't take the quality of the ground into account. Anyway, today, centuries later, it's hard to call that a mistake – the building is still standing, and its imperfection has brought it worldwide fame. Or maybe that's exactly what they call a great mistake?

Decca records rejected the Beatles in 1962 because they "had no future in show business". Three months later, they signed their first serious contract. From there, they started their journey to international stardom.

If Decca records could go back in time, they would probably reconsider their actions and sign the Beatles... or wouldn’t?

During the war with the Ottoman Empire in 1453, the Genoese general in charge of the land troops of Constantinople, Giovanni Giustiniani, was badly injured and had to be carried away from the battle scene with his men also in a state of panic.

This meant they had to open the inner city gate and the Byzantines were already badly hit at this point. The gate was left open by some random fool, and the Turkish Janissaries quickly swarmed into Constantinople. They opened the main gates, and the rest of their soldiers entered the city.

Perhaps this mistake led to the fall of Constantinople, which at the time was one of the most difficult military nuts to crack.

The reason why NASA lost a Mars orbiter was because the engineers did not convert English units to metric measurement when it was exchanging valid data. This happened because half the team used English units, and the other half used metric units.

A lot of factors contributed to the sinking of the Titanic. Perhaps the most crucial one is that none of the crew members had a set of binoculars.

One of them noted that if they had binoculars, it may have been possible to spot the iceberg sooner and find ways to stop the ship from hitting the iceberg. It's amazing that something as little as a pair of binoculars could have averted the loss of so many lives