So whether that's scrawled on a dollar bill, transmitted officially via the "PG Handshake Protocol", or signed on your ass with a picture in the mirror for posterity... doesn't matter, have fun with it and get it done!
o Physical Tokens continue to have real value beyond the ephemerality of digital data.
o A scrawled signature is both somewhat of an validation of identification, plus, it's a somewhat more concrete step than just sending an email. There is ceremony around it.
o With a bit of thought, you can create a Mini-Term sheet that can be signed/counter signed.
o Sharpie on Dollar bill is harder to modify / change - particularly if you have a number of signatures that have been built up on it.
o That multi-signed dollar bill would have a lot of potency, particularly if you are able to assemble a top-tier investment group. Suitable for framing.
o Everyone has a mobile device at all times, trying to remember to carry cash and/pens is an extra step. Cash, in the valley, is not as ubiquitous as a phone. In fact, it's not as ubiquitous as a smart phone.
o Texting is instantaneous. In fact, when we're sitting at a table having a conversation, it's not unusual for some people to be texting each other instead of talking to avoid creating a break in the conversation / side conversation.
o Central, Secure, two-party tracking with SMS/WhatsApp/iMessage. Nice Audit trail as well, and you have it all handy on your phone to keep track of things. Nobody wants to deal with more little pieces of paper.