I disagree. I haven't read HtDP through, but it appears to be aimed more at designing and modularizing algorithms, whereas SICP first covers different ways to w

I disagree. I haven't read HtDP through, but it appears to be aimed more at designing and modularizing algorithms, whereas SICP first covers different ways to write an algorithm and then continues to different views of computing. They get at somewhat different things, but I suspect that SICP talks about more fundamental ideas than HtDP, and is therefore a better choice if you're only going to read one of them. (If you're reading both, of course, do whatever.)