When you transmit the pads may not correspond with when you want the message sent. For example I may be able to send you a one-time pad securely today, but the

When you transmit the pads may not correspond with when you want the message sent. For example I may be able to send you a one-time pad securely today, but the message I need to tell you ("buy GM stock at 37.82") I won't know until next week -- at which point I may not be able to expediently send you the one-time pad securely.