Words they say can make or mar you. This in essence packs in a lot and tells us so much about the power in the words we so often speak carelessly without having a preconceived thought of the after effect of that word on us the speaker, the recepient or the people around at the time. Such is the power of the word we speak or issue through writing. Words are so delicate to the extent that a particular thought may need to be passed using some carefully selected words based on the context and environment even when the use of synonymous words would have meant the same. The power of words gives a clear reason why public figures. Political office holders, media personalities always make it a big deal when they communicate, they do so with so much preparation giving great cognizance to waht they are about to spew with their tongue as they know how delicate and powerful spoken words are ; once spewed, it cannot be retracted, it stays in the history books even after those who heard it are no more. Consequently, the making of so many figures can also be attributed to their speaking ability, their carefulness, thoughtfulness and vibrancy with words. Hence, words are capable or making and also bring about down fall.
Obsidian was valued in the Stone Age cultures because, it could be fractured to produce sharp blades or arrowheads. Like glass, obsidian breaks with a characteristic conchoidal fracture. It was also polished to create early mirrors.
I think that web diagramming is more of a writing strategy not a reading one. However I am not 100% sure! I'm sorry! I hope you get the correct answer!
