4 ms·

You are so on to something here....too bad VC money for such game-changing ideas is running dry these days...

• voiceblue 3y ago
  Not sure if you're being sarcastic (the person you're replying to definitely is), but pneumatic tubes [0] have been around since the 19th century. [0] https://en.wikipedia.org/wiki/Pneumatic_tube https://en.wikipedia.org/wiki/Pneumatic_tube
  • omnimus 3y ago
    Yes they are being sarcastic.