brkn first i think i should dowload the brain-dev file or not ? but this is the output of your last code :
apt-cache show brain
Package: brain Version: 1.0.1-1 Installed-Size: 211 Maintainer: Godfried L. Heavenly <glheavenly@debian.org> Architecture: armel Depends: libc6 (>= 2.3.4), libncursesw5 (>= 5.6+20070908), clue (>=0.2), libbrain (>=0.1), libtinfo5 Suggests: librl, libsarcasm Section: utils Priority: optional Filename: pool/main/b/brain/brain_1.0.1-1+0m6_armel.deb Size: 74904 MD5sum: 7f229dbf58d25bb0ac627c3a012dd3ff SHA1: 9d741e558dab209c67f0385e2bab812aaf5540aa SHA256: 872edad80ac74297b2980a24b02bcb24c417c54f441f93ba7661b1a915c2fe18