The talk at the FOSDEM conference in 2023 was about the possibility of building an open source chip design. The speaker discussed the technology, tools, and processes involved in creating an open source chip. They highlighted the importance of the community and collaboration in such efforts. They also mentioned the availability of open source simulators, build systems, and verification frameworks. The speaker emphasized the recent development in open source hardware design, such as the availability of the SkyWater PDK and the Shuttle program, which allows anyone to get their open source design manufactured. They also mentioned upcoming events and learning opportunities in the field of open source chip design. The talk concluded with a quote from 1978, highlighting the vast and unexplored potential of the field and the benefits of pursuing open source chip design.