Short and long term are not channel categories.
Short and long term are not channel categories. A promotion can create volume now and damage reference price later; a product improvement can reduce immediate margin while increasing retention and willingness to pay. Put every decision into two accounts: contribution during the budget window, and change in the demand asset beyond it. Temporal coherence protects a performance floor while avoiding invisible marketing debt.
Decision and method.
Choose the scenario that meets the immediate contribution floor and maximises discounted future-effect value within an acceptable uncertainty range. Select decision window, effect duration and discount rate; distinguish rapid signals, delayed behaviours and assets whose depreciation appears only after several periods. For each option compute immediate contribution, then effects on retention, net price, penetration or future cost, using a distribution rather than one long-term multiplier. Establish cash floor, minimum capacity, brand-health thresholds and maximum exposure; test cases where future value is half as large or delayed. Review metrics according to causal lag: weekly sales must not stop an action whose first credible effect is quarterly.
Worked example.
An activation scenario adds €280,000 quarterly contribution but reduces coverage and consideration. A balanced scenario adds €190,000 and maintains €220,000 brand investment. The model estimates a future loss of €420,000 for activation and a €60,000 gain for balanced. At 10% annual discounting over eighteen months, future loss is about €364,000 and gain €52,000. Total activation value: 280 − 364 = −€84,000. Balanced: 190 + 52 = €242,000. Even if future effect is halved, activation is €98,000, still below balanced at €216,000. Retain balanced and reserve €40,000 for a brand experiment rather than assume a fixed multiplier.
Checks and limits.
Use reconciled economic units for immediate and future effects; publish discount rate, lags and intervals; frame optimisation with an immediate floor and future minimum; respect causal lag in reviews. Future brand value remains difficult to identify precisely; discounting does not solve structural uncertainty; competitive shocks can abruptly alter returns to accumulated assets.
Resources and sources.
Download the two-horizon account. Related: brand versus performance, measure brand effects, optimise under uncertainty. Sources: Dekimpe & Hanssens (1995); Binet & Field (2013); Srinivasan, Vanhuele & Pauwels (2010).