“Let me prove to you that I’m not a hologram!”
Echo is alarmed by this. Either this “future Echo” is not telling the truth about her identity, or even more disturbingly, in the future, something happens to change her from a hologram into a different form. She draws her phaser and looks at her doppelganger uncertainly.
“I’m sorry, I must have mis-heard you. Would you care to repeat that statement?”