  In $\langle \bar{t}t \rangle$-scenarios for dynamical electroweak symmetry
breaking, the presence of a very large t-quark condensate necessarily generates
an $s \leftrightarrow d$ self-energy transition which will contribute
exclusively to $\Delta I = 1/2$ strangeness-changing matrix elements. This
contribution is calculated and compared to the purely perturbative
contribution, which is well-known to be far too small to have an appreciable
effect on $\Delta I = 1/2$ strangeness-changing matrix elements after
mass-shell renormalization subtractions are taken into account. The ratio
between the t-quark condensate's contribution and the standard-model
perturbative contribution to the mass-shell renormalized $s \leftrightarrow d$
self-energy transition is shown to be of order $\mid m_t \langle \bar{t} t
\rangle \mid / M_W ^4$, suggesting that the large t-quark condensate proposed
for electroweak symmetry breaking may also be responsible for the $\Delta
