If human can read bi-directional, the reading speed becomes double. Writing speed gain isn't much.
It made sense to me. So, I played with this concept for few days. I made a new writing system last night. It's pure experimental writing language. It has 24 basic symbols which based on Korean alphabet. Each symbol is simple, easy to write, and complete symmetric shape such as a circle or square or triangle. I redesigned Korean alphabets. Technically it's phonetic writing system so it's language independent.
I plan to use it to write Korean and English for fun and experiments. There are some rooms of addition and enhancement. I think It's better have more eyes to find logic flaws than oneself.
If there are members who are interests or want to join the development, let me know. I'm willing to put every steps here as it goes. I want to make it public domain as the Colemak creator did.
Bear in mind I'm not a linguistics nor expert in related field. I learned Korean, English, and Chinese alphabet, computer programming languages. One writing language that covers all languages. Is it possible? Esperanto, English, even Korean isn't good enough. International phonetic symbols aren't systematic. It misses the bonding property that firms unique word, which I feel.
The flow of reading is non-stop like water runs down the channel in bi-directional sentences. 10 lines will be exact 10 scans. Uni-directional - left to right - gives 19 scans for 10 lines.
Once again, pure experimentation I mean.