If a .zip file contains all of the information of the original, just in less space, why does it have to be unzipped to access any of it?
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Imagine a flat pack table. When you buy it and put it in your car, you only need to use the space the flat pack occupies In your car. So it can be transported to your house. Then YOU build it into a full table. If you went and bought a fully built table it probably wouldnt fit in your car, and so you would have to use a van. A bigger vehicle to move it. The size of the car and the van are (if your are downloading the file) the bandwidth/transfer rate. Its faster and easier to transport the COMPRESSED flat pack than the fully built table. You may be able to get 4 flat packs into your car for every one fully built table. The act of building the table at home is the decompression software on your own PC. Unzipping is the building of that table. You are the processor.
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