coloumns of karnak

There are lots of columns in ancient Egyptian buildings because they had not invented the arch. If they had, they would have been able to build greater spans to hold up stone roofs and therefore would need fewer columns.

On a separate note, I have decided to try posting different size photos. Until now I have resized then to 800 pixels wide or high (depending on the orientation). I have noticed thought that other photobloggers are starting to post larger photos, likely because most visitors have larger screens nowadays. So I am switching to 900 pixels wide (or high) and I may experiment with 1000 pixels. Let me know what you think.

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