Answer:
I am used for light yet I am solid. Without me you would feel enclosed. I hate being touched especially with a lot of force. I like to be in buildings.
I go up and I go down, towards the sky and the ground. Iβm present and past tense too, letβs go for a ride, me and you. What am I?
I carry you down a gentle stream.
I am in the middle of water but am not an island.
I mean goodbye for South Americans.
The answer I give is yes, but what I mean is no. What was the question?