Why were Hieroglyphics so difficult to decipher

1

• Why were Hieroglyphics so difficult to decipher?
• 1.There were so many of them. Over 750.
• 2.Some stood for sounds, some stood for ideas,
  some were phrases.
• 3.The written language had been dead for 1500
  years. The last hieroglyph was carved in 400
  A.D.
• 4.Hieroglyphics dont have vowels.
• 5.Could be written vertical or horizontal. Could
  be read right to left or left to right. Could
  also be stacked. It was more an art form than a
  communication tool.
• 6.There were different styles or forms. Hieratic
  and Hieroglyphics.
• 7.Historical information was often incorrect.
  Ex. Herodotus
• Why was the Rosetta Stone so difficult to
  decipher?
• 1.It was broken. Lines were missing.
• 2.No one spoke or read hieroglyphics for 1500
  years.