Answer the following whether it is true / false: 1. humans discovered programming languages in the 1940s and have been decoding them ever since. 2. the print function can only print literal values. 3. variables change their value over time according to the instructions in a program. 4. variables in python are used to solve for unknown values, like in algebra. 5. variable names are important because computers understand the meaning of names and change their value accordingly. 6. normally, statements are executed from top to bottom. 7. expressions are always evaluated from left to right. 8. strings are composed of only letters and symbols.