Philosophically Different

Water is something that is essential to us. Human beings need liters of it every day while it replenishes us with its wonderful hydrating properties. I love water and have to choose between all the water brands like Dasani, Aquafina, and SmartWater. Sometimes, though, I think to myself is every water bottle the same? The water bottles filled with water look the same and I wonder to myself are they the same or different? This question can be applied to many things. For example, in a 100 room hotel is every room the same or are they different? Is every iMac the same or are they different? This philosophical question intrigues me because I wonder about the nature of different and same. I hope you are intrigued by life like I am.