Not sure what you thought the picture above represents, but it is a sentence in Ogham, a script used to "write very old Irish, from 3rd to 6th century of our era." The phrase above means "Fáilte Romhat" or "Welcome" in Modern Irish. Ogham could be written both vertically and horizontally, and crossing lines cold be replaces by dotes (for vowels). In the last form it resembles Morse alphabet, except that 3rd century Irish apparently didn't care about ergonomic issues too much. Frequently used letters aren't always simpler than rarely used.

I read that the Korean alphabet is considered the most logical in its organization. Perhaps this is true if we are talking about alphabets that are still in use. For me, Ogham manifests the most logical, and purely mathematical way of representing sounds. They are simply numbered: a = 1, o = 2, u = 3... Now you can write them horizontally, vertically, right-to-left, left-to-right; you can use lines or you can replace them by dots -- your reader will still probably be able to read your message!