Can we get a snapshot of the internet at 6 AM each morning?
Can you send a physical package from Los Angeles to New York City in 14 minutes?
Can you write software that will province 100% accuracy of handwritings for all human beings on the planet? (That's arguably more possible than the Los Angeles example above, but only in theory)
Can you write software that will write the sequel to the Lord of the Rings?
Can you write software that will complete Mozart's unfinished Requiem Mass in d minor?
Can you get a complete list of valid email addresses of actual people on the entire internet, in all countries?
Can you write software that will convert what it sees through a camera as speech, thus allowing a blind person to walk around a city and have the software describe, in details, what the device with the camera is pointing at?
Can you create software that can replicate the artificial intelligence of a common fly, and be placed in a device the size of a hand-powered drone, with the ability to actually fly and avoid being hit?