How has NBA basketball changed over time?

1. Players

1.1. Michael Jordan

1.2. Kobe Bryant

1.3. Wilt Chamberlian

2. Inventor

2.1. James Dr. Naismith

3. Fans

3.1. Fans Grew Fast

4. Rules

4.1. 24 Shot Clock

4.2. Reaching Foul

4.3. Blocking Foul

4.4. Shooting Foul

5. Salaries

5.1. Depends on the contract and team