This article contains a number of comments on the one which appeared under the same title in the May 1971 issue of the National Institute Economic Review, which was prepared by J. D. Whitley and G. D. N. Worswick. It will be obvious to readers that some of the comments made in that article and in this reply are of the detailed kind which might with advantage have been cleared up by correspondence before publication. In fact, such an exchange of papers between the National Institute and the Department of Applied Economics was begun last year. However, the halving of SET announced in the budget obliged the National Institute to take a view on its probable effect, and they felt that this entailed explaining to their readers why they had not been wholly convinced by the analysis of the Reddaway Report. This left no time for any further attempts to reconcile, where possible, the differentpoints of view.