A recurring theme in 2015 has been "seeing is believing" — especially for girls.
It's easier to believe you can do something when you've seen someone else do it. That's why no matter how frustrated you get assembling IKEA furniture, you have to believe in those instructions. You saw it put together in the store. You know it can be done!
2015 has been marked with some major "seeing is believing" milestones of its own. From comedy to politics to sports to engineering, many women have taken the status quo and said, "ehhh … let's try it my way instead."