Proponents of computerized text-analysis (CTA) systems like Bell Laboratories' Writer's Workbench contend that the computer's analysis of a text's surface features can help students become better writers and editors. Several colleges and universities have already integrated the new technology into their writing programs, and others will consider doing so in the future. Teachers of technical writing, however, ought to investigate carefully the capabilities and limitations of CTA before applying it to the technical writing classroom. Not even the most sophisticated of today's computers can detect the basic grammar and punctuation errors that bedevil student writers. Moreover, the computer's evaluation of a text's readability and style is untrustworthy and lacks a sound theoretical and pedagogical foundation; indeed, the machine's quantitative-based analysis of writing style might do some students more harm than good. Finally, there is no empirical evidence that CTA helps students become better writers.