Shorting long-term bonds with high modified duration would yield gains when interest rates rise and bond prices fall. Black swans and fractals: we can't predict

Shorting long-term bonds with high modified duration would yield gains when interest rates rise and bond prices fall. Black swans and fractals: we can't predict the future but sometimes Blackswans flock together, e.g., autoregression, feedback patters, volatility of volatility, etc.