Symptoms of being an old man a veteran Internaut include the following:

• Writing HTML tags in all caps
• Claiming that "running on the original Pentium isn't that impressive"
• Being amazed by the mere existence of the Internet
• Being bitter about a perceived decline in the quality of computer programs
• Passionately hating Python
• Playing NetHack
• "Docker is for punks."
• Writing coherently
• Writing e-mail addresses in angle brackets
• Liking e-mail
• Hyphenating "e-mail"
• Valuing work ethic, especially in computer programmers
• Claiming that the efficiency of the command-line interface is typically greater than the efficiency of the graphical user interface...
• ...but asserting that graphical user interfaces do have a place, too