Consider how these letters are pronounced in Arabic.
And then consider how they are written.
They are pronounced with tongue slightly curled.
And very interestingly, they are written with curls as well!
Looks like whoever designed these letters, designed them based on their pronunciation. 
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
Arabic is heir to other Semitic languages like Aramaic, Hebrew and Phoenicians. Grammar of these languages was very close to each other. And so were the letter shapes.
But Arabic letter shapes are very different from these languages. It shows that Arabic speakers changed the original letter shapes for their language. Reason most probably was to make writing quicker. Changing the shapes helped Arabic join the letters. Otherwise Arabic's parent languages all had letters written individually to make a word.
Re: “Saad, Dhaad, Toy, Zoy”: pronunciation and letter shapes
Interesting. :k:
Is this just a random thought or you are reading something on the topic?
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
It is just a random thought. Just wanted to share.
No other letter in Arabic has any curl except these four letters. And each one of them is pronounced with curled tongue.
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
Arabic is heir to other Semitic languages like Aramaic, Hebrew and Phoenicians. Grammar of these languages was very close to each other. And so were the letter shapes. But Arabic letter shapes are very different from these languages. It shows that Arabic speakers changed the original letter shapes for their language. Reason most probably was to make writing quicker. Changing the shapes helped Arabic join the letters. Otherwise Arabic's parent languages all had letters written individually to make a word.
Are Hebrew/ Aramaic scripts in use today? I mean whether the languages survived?
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
^ isn't Hebrew spoken in Israel?
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
I think they use Arabic
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
^ isn't Hebrew spoken in Israel?
Hebrew had become an extinct language. Hebrew of present day is a revived/changed language.
Original Hebrew was written right to left. Present one written left to right. That is all I know about it.
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
How they revive that old language? what script they follow? Roman?
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
I believe modern day Aramaic is still spoken by scattered groups of Christians & Jews in sporadic parts of Western Asia, but Aramaic in it's purest form, and that of the Scriptures has been diffused.
And yes, Hebrew is considered to be the official language of Israel
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
Are Hebrew/ Aramaic scripts in use today? I mean whether the languages survived?
Aramaic, the language of Jesus, is a dead language. It has been totally replaced by Arabic.
Re: "Saad, Dhaad, Toy, Zoy": pronunciation and letter shapes
Aramaic, the language of Jesus, is a dead language. It has been totally replaced by Arabic.
Its strange that after all the historical tussle between Bani Israel and Bani Ismael, Bani Israel couldn't save their language and their language was replaced by Arabic (language of Bani Ismael)
Re: “Saad, Dhaad, Toy, Zoy”: pronunciation and letter shapes
They follow hebrew script lol
It was revived mainly due to the extensive work of scholars who looked at the old hebrew and then also “updated” the language for more modern times
Revival of the Hebrew language - Wikipedia, the free encyclopedia