Cassava is classified as sweet or bitter. Like other roots and tubers, Cassava contains anti-nutrition factors and toxins. It must be properly prepared before consumption. Improper preparation of cassava can leave enough residual cyanide to cause acute cyanide intoxication and goiters, and may even cause ataxia or partial paralysis.Nevertheless, farmers often prefer the bitter varieties because they deter pests, animals, and thieves. The more-toxic varieties of Cassava are a fall-back resource (a “food security crop”) in times of famine in some places.
Not all prosodists agree that foot scansion is helpful.  For example, in trisyllabic measures (anapestic, amphibrachic, dactylic) it is often quite arbitrary where one divides the feet, and the salient fact seems to be the number of non-ictic syllables —in this case two— between each ictus, rather than whether the repeated pattern is imagined as××/, ×/×, or /××. Foot analysis tends to imply that there is a special relationship among syllables within feet which does not apply across feet, but this is doubtful. Furthermore, iambic pentameter (despite its name) may be better described as a series of 10 positions than of 5 feet, especially since the sequence ××// may be interpreted as the swapping of ictic and non-ictic positions across feet, suggesting that if feet constitute any kind of boundary at all, it is a porous one indeed.