The Reserve Bank won’t be able to cut interest rates even if Australia falls into a recession and house prices plunge, a leading economist fears. The futures market sees no prospect of a rate rise on Tuesday next week, with unemployment already at a four-year high of 4.5 per cent in April. Among the big four banks, NAB on Tuesday became the first to signal the next move from the RBA would be a cut to the existing 4.35 per cent cash rate. [....]