# Key Points from IRC Log

• A discussion about tDCS (transcranial direct current stimulation) included sharing of a DIY brain-boosting kit called "GoFlow" and a Nature article on tDCS, with some skepticism expressed about the current popularity of tDCS given its lack of specificity compared to other brain stimulation methods.

• A user inquired about options for massive scale computing on a budget, with suggestions including EC2, GPUs, and FPGAs, though the conversation highlighted the inherent challenge of achieving high-performance computing without significant financial investment.

• DNA synthesis technology was discussed, including IDT's trade-in program for used DNA synthesizers and the high cost of professional equipment (a Biolytic DNA synthesizer was noted at $130,000).

• A user shared information about ELISA (Enzyme-Linked Immunosorbent Assay) as a method for detecting multiple proteins in blood samples when another user asked for relevant search keywords.

• A user mentioned successfully programming a CPLD (Complex Programmable Logic Device) using an elaborate toolchain spanning "2 laptops, parallel ports, flashcards and telnet interfaces."

• The conversation touched on various computing topics including server racks (with a mention of "lackrack" as an alternative) and shell scripting.