Answer the question at the end by quoting:

Thor Heyerdahl (Norwegian pronunciation: [tu:r 'haei@da:l]; October 6, 1914 - April 18, 2002) was a Norwegian adventurer and ethnographer with a background in zoology, botany, and geography. He became notable for his Kon-Tiki expedition in 1947, in which he sailed 8,000 km (5,000 mi) across the Pacific Ocean in a hand-built raft from South America to the Tuamotu Islands. The expedition was designed to demonstrate that ancient people could have made long sea voyages, creating contacts between separate cultures. This was linked to a diffusionist model of cultural development.
In 1947, Heyerdahl and five fellow adventurers sailed from Peru to the Tuamotu Islands, French Polynesia in a pae-pae raft that they had constructed from balsa wood and other native materials, christened the Kon-Tiki. The Kon-Tiki expedition was inspired by old reports and drawings made by the Spanish Conquistadors of Inca rafts, and by native legends and archaeological evidence suggesting contact between South America and Polynesia. The Kon-Tiki smashed into the reef at Raroia in the Tuamotus on August 7, 1947, after a 101-day, 4,300-nautical-mile (5,000-mile or 8,000 km) journey across the Pacific Ocean. Heyerdahl had nearly drowned at least twice in childhood and did not take easily to water; he said later that there were times in each of his raft voyages when he feared for his life.  Kon-Tiki demonstrated that it was possible for a primitive raft to sail the Pacific with relative ease and safety, especially to the west (with the trade winds). The raft proved to be highly manoeuvrable, and fish congregated between the nine balsa logs in such numbers that ancient sailors could have possibly relied on fish for hydration in the absence of other sources of fresh water. Other rafts have repeated the voyage, inspired by Kon-Tiki. Heyerdahl's book about The Kon-Tiki Expedition: By Raft Across the South Seas has been translated into 70 languages. The documentary film of the expedition entitled Kon-Tiki won an Academy Award in 1951. A dramatised version was released in 2012, also called Kon-Tiki, and was nominated for both the Best Foreign Language Oscar at the 85th Academy Awards and a Golden Globe Award for Best Foreign Language Film at the 70th Golden Globe Awards. It was the first time that a Norwegian film was nominated for both an Oscar and a Golden Globe.  Anthropologists continue to believe that Polynesia was settled from west to east, based on linguistic, physical, and genetic evidence, migration having begun from the Asian mainland. There are controversial indications, though, of some sort of South American/Polynesian contact, most notably in the fact that the South American sweet potato is served as a dietary staple throughout much of Polynesia. Blood samples taken in 1971 and 2008 from Easter Islanders without any European or other external descent were analysed in a 2011 study, which concluded that the evidence supported some aspects of Heyerdahl's hypothesis. This result has been questioned because of the possibility of contamination by South Americans after European contact with the islands. However, more recent DNA work (after Heyerdahl's death) contradicts the post-European-contact contamination hypothesis, finding the South American DNA sequences to be far older than that. Heyerdahl had attempted to counter the linguistic argument with the analogy that he would prefer to believe that African-Americans came from Africa, judging from their skin colour, and not from England, judging from their speech.

how long ago was the expedition

In 1947, Heyerdahl and five fellow adventurers sailed from Peru to the Tuamotu Islands, French Polynesia

IN: Ross James Brawn OBE (born 23 November 1954) is the Formula One Managing Director of Motorsports and technical director. He is also a former motorsport engineer and Formula One team principal. He had worked for a number of Formula One teams, serving as the technical director of the championship-winning Benetton and Ferrari teams. He took a sabbatical from the sport in 2007 but returned to F1 for the 2008 season as Team Principal of Honda.

His career in motorsport began in 1976 when he joined March Engineering in the town of Bicester as a milling machine operator. Soon afterwards he joined their Formula 3 racing team as a mechanic. Brawn was hired by Sir Frank Williams in 1978 as a machinist for the newly formed Williams team. He quickly moved up through the ranks, working in the R&D department with Frank Dernie and as an aerodynamicist in the team's wind tunnel.  Brawn joined the Haas Lola team in 1985 and was part of Neil Oatley's design team at FORCE that produced both the Lola THL1 and THL2 cars used by the team. However, with the 4 cylinder Hart engine in the THL1 and the new Ford V6 turbo powering the THL2, results were scarce against teams like McLaren and Williams with their TAG-Porsche and Honda turbo engines. This was despite the cars generally being regarded by most in the F1 paddock as being the best handling cars on the grid, as well as having 1980 World Champion Alan Jones and former factory Ferrari and Renault driver Patrick Tambay as the drivers. When the Haas team left F1 at the end of the 1986 season, Brawn moved to Arrows. There he designed the Megatron powered Arrows A10 and its update, the A10B for the 1987 and 1988 seasons respectively and the Ford V8 powered Arrows A11 used in 1989.  Later in 1989 Brawn moved to the Jaguar Sportscar racing division, and was lead designer on the Jaguar XJR-14 which won the 1991 World Sportscar Championship.

What did he do there?

OUT:
He quickly moved up through the ranks, working in the R&D department with Frank Dernie and as an aerodynamicist in the team's wind tunnel.